bluuebunny/crossref_metadata_2025 huggingface dataset:
Rancangan Aplikasi Elektronik Menu Restoran PJ83 Jakarta Berbasis Android
Authors: Aswari Aldi , Santos Butar-Butar Forkas Tiroy , Halimatusha’diah Halimatusha’diah
Published: April 2020

Tujuan dari penelitian adalah untuk merancang aplikasi elektronik menu makanan restoran untuk membantu pihak restoran dalam menangani pemesanan menu makanan dan memberikan kemudahan pelanggan untuk mengetahui menu yang tersedia pada restoran sehingga tidak memerlukan waktu yang lama dalam pemesanan makanan. Dengan menggunakan firebase aplikasi pemesanan di sisi pelanggan berbasis android dapat terintegrasi dengan aplikasi restoran berbasis android untuk mengatur pemesanan. Dalam perancangan aplikasi ini, metode yang digunakan untuk menganalisis perancangan aplikasi ini adalah metode grounded yaitu metode penelitian berdasarkan pada fakta, empiris, menetapkan konsep membuktikan dan mengembangkan teori, pengumpulan dan analisis dalam waktu bersamaan. Pada hasil pengujian yang dilakukan, aplikasi elektronik menu pada restoran yang diuji dengan kuesioner. Dan peneliti menarik kesimpulan bahwa sistem yang masih konvensional berubah menjadi suatu aplikasi untuk mempermudah restoran memberikan menu yang lebih efektif. Serta melakukan data input menjadi lebih cepat, karena sistem mampu melihat menu yang dipesan oleh pelanggan. Kata Kunci: Perancangan Aplikasi, Aplikasi Elektronik, Menu PJ83, Android
Sistem Penyewaan Rental Mobil dan Pengolahan Data pada Jennete Rent Car Berbasis Java
Authors: Kurniaedi Ari , Abadi Laksana Priyo , Kuncoro Adhityo
Published: April 2020

Permasalahan dari sistem penyewaan rental mobil di Jennete Rent Car yaitu lambatnya pencarian pendataan ketersediaan mobil, data mobil, data peminjam, serta proses laporan penyewaan mobil yang diakibatkan karena sistem yang diterapkan masih bersifat manual dan belum terkomputerisasi. Dari persoalan tersebut, penulis tertarik untuk mengembangkan sistem penyewaan rental mobil di Jennete Rent Car yang ada saat ini sehingga dapat mengatasi kekurangan yang ada. Seiring dengan semakin canggihnya teknologi yang berkembang, komputer telah mendorong terjadinya perubahan ilmu, baik dalam kajian ataupun implementasi dilapangan. Peran teknologi komputer sangat diperlukan oleh berbagai perusahaan. Mengingat kebutuhan akan peningkatan efisiensi dan efektifitas dari setiap kegiatan dalam instansi tidak dapat diukur dan dilakukan secara cepat dan akurat tanpa adanya dukungan teknologi tersebut. Akurasi data, kecepatan waktu dan relevansi menjadi penentu kualitas informasi yang dihasilkan. Dengan menggunakan metode pengembangan sistem yaitu Waterfall dalam penelitian ini adalah dengan tahapan-tahapan seperti rekayasa sistem, analisis, desain, coding, testing, dan maintenance. Hasil dari penelitian ini adalah menciptakan aplikasi untuk penyewaan mobil efektif dan efisien. Kata Kunci: Sistem, Penyewaan, Mobil
Las piedras al fuego. Experimentos para abordar la distribución espacial de restos líticos termoalterados
Authors: Frank Ariel David , Baridón Juan
Published: April 2020

En este trabajo, evaluamos el modo en que se distribuyen los restos líticos descartados en estructuras de combustión. Realizamos experimentaciones en las cuales arrojamos al fuego lascas de diversos tamaños. Una vez apagados los fogones, analizamos el modo en que quedaron dispersos los fragmentos generados. Las materias primas empleadas son variedades silíceas procedentes de la Meseta Central de Santa Cruz y vidrio industrial. Los resultados indican que las distintas materias primas responden de manera diversa al calor pero también que existen tendencias vinculadas al tamaño de los artefactos. Las piezas pequeñas tienen un bajo índice de fragmentación y tienden a mantenerse dentro de la estructura de combustión. Los elementos de mayor tamaño suelen fragmentarse intensamente y pueden despedir gran cantidad de partes fuera del fogón, llegando incluso a más de 3 metros de distancia. A partir de los resultados se proponen expectativas para distintos contextos de caída de piezas al fuego.
Técnicas de observación, talla experimental y morfometría geométrica para el estudio de material lítico tallado en cuarzo
Authors: Moreno Enrique Alejandro , Egea Débora
Published: April 2020

El estudio del cuarzo como materia prima para la manufactura de instrumentos líticos ha ido aumentando, desarrollándose nuevas estrategias analíticas para comprender las elecciones tecnológicas de los antiguos talladores. En nuestro caso particular, hemos desarrollado una experimentación tendiente a diferenciar los resultados obtenidos mediante talla directa y talla bipolar, comparando con los resultados de los sitios excavados en la Sierra de El Alto-Ancasti, Catamarca, ubicados cronológicamente en la segunda mitad del primer milenio de la era. Nuestro objetivo aquí es el de aportar nuevas vías de estudio con base en los materiales de experimentación y los conjuntos arqueológicos a partir del estudio de variables métricas y el desarrollo de análisis de morfometría geométrica. La principal hipótesis de partida se basa en que las técnicas de talla fueron utilizadas para la obtención de formas base diferentes, para la manufactura de instrumentos particulares. Para ello comparamos los datos métricos de largo, ancho y espesor. El estudio de la morfometría geométrica se centró en el mismo tema, evaluando la presencia de tendencias distintas en las formas base de instrumentos con funcionalidades diferentes.
Análisis formal del mortero múltiple ubicado en Cerro de los Viejos (Departamento Caleu Caleu), La Pampa, Argentina
Authors: Paez Florencia Natalin , Berón Mónica A. , Lucero Eliana N. , Carrera Aizpitarte Manuel P.
Published: April 2020

Las actividades de molienda de vegetales y minerales se encuentran ampliamente documentadas en la provincia de La Pampa. La tecnología asociada ha sido hasta el momento de carácter transportable. En este trabajo se presenta el análisis del primer conjunto de artefactos fijos de molienda detectado en la provincia. La presencia de tecnología fija de molienda permite abordar diversos tópicos vinculados con las sociedades del pasado, más allá de la función que específicamente cumplieron. La alta inversión de trabajo necesaria para generar los morteros y molinos fijos, sumado a la extensa vida útil que presentan, indican una preocupación por modificar y acondicionar un espacio, anticipando necesidades futuras en un lugar al que se prevé volver sucesivamente. El conjunto detectado en Cerro de los Viejos está formado por 11 morteros dispuestos en forma central, dos molinos y rasgos asociados a ellos. En su entorno se registraron diversas manifestaciones culturales, con diferentes temporalidades que abarcan desde el Holoceno Medio (ca. 6000 años) hasta tiempos históricos. Su presencia pudo alentar el continuo uso de este lugar a lo largo del tiempo promoviendo sentimientos de apropiación del espacio por los grupos que los generaron y sus descendientes. En este trabajo se consideran los aspectos morfológicos, tipológicos y sus posibles modos de uso en relación con las sociedades cazadoras- recolectoras del semidesierto pampeano.
Alero La Esperanza. Un pequeño taller lítico del Holoceno medio en las sierras de Tandilia (Región pampeana, Argentina)
Authors: Weitzel Celeste , Colombo Mariano , Pazzi Franco
Published: April 2020

Se presentan los resultados del análisis de los materiales líticos recuperados en el sitio Alero La Esperanza (La Numancia, Pdo. de Tandil, Región Pampeana). Se trata de un taller ubicado en inmediaciones de canteras-taller de ortocuarcita grupo Sierras Bayas, datado en el Holoceno medio. Los resultados indican que en este espacio se llevaron a cabo las etapas intermedias de la cadena operativa y los objetivos de producción son consistentes con las propuestas de aprovechamiento de las ortocuarcitas del grupo Sierras Bayas durante el Holoceno medio.
Historias de agua y fuego. Modificaciones del material lítico en sitios del bosque norpatagónico
Authors: Carballido Calatayud Mariana , Bellelli Cristina
Published: April 2020

Entender los aspectos generales del bosque, especialmente la dinámica de las perturbaciones naturales (incendios) y la elevada humedad, así como los propios de los sitios, tales como su ubicación topográfica, las dinámicas de erosión / depositación y los vinculados con la ocupación humana, nos permitieron caracterizar a los procesos de formación del registro arqueológico que afectan recurrentemente a los conjuntos líticos de este ambiente. El análisis de tres casos ubicados en localizaciones diferentes del área boscosa comprendida entre el límite sur del Parque Nacional Nahuel Huapi y el límite norte del Parque Nacional Los Alerces permitieron determinar que el fuego, sobre todo el producido por los incendios forestales, es un poderoso agente transformador de los conjuntos líticos confeccionados en diferentes materias primas, pero sobre todo de aquellas con alto contenido de sílice. La humedad de los depósitos actuó de manera heterogénea dependiendo de la localización de los sitios, siendo sus efectos los propios de flujos de baja energía (películas de sedimento o manchas blancas).
Primeros acercamientos a los estudios líticos desde diversas tendencias teórico metodológicas
Authors: Brizuela Camila De Fátima
Published: April 2020

Dando lugar a la posibilidad de expresión a futurxs arqueólogxs en pleno proceso de formación, se decidió apostar a la generación de un espacio de intercambio de resultados y avances de investigación alcanzados. Se constituyó así una Mesa de Estudiantes en el 1º Congreso Argentino de Estudios Líticos en Arqueología (1º CAELA) realizado en septiembre de 2018, siendo una excelente oportunidad para dialogar y reflexionar sobre los diversos casos referidos al estudio del material lítico desde una vasta pluralidad de marcos teóricos y metodológicos, como así también temporales y espaciales.
Capitalizing on game Theory for Optimal Marketing decision in Service Industry: Evidence from telecommunication Industry in Nigeria
Authors: oreagba oluwakemi , ogunnaike olaleke , kehinde Oladele
Published: April 2020

The paper aims to capitalize on game theoretic techniques- Prisoner Dilemma, Cournot model, Betrand model, Quasi-game, and Stackelberg for optimal service marketing decision within the Telecommunication industry.
Happiness and Wellbeing Co-existence in Organizations
Authors: Shibli Naveed , Salman Atika
Published: April 2020

Wellbeing
and happiness relationship was studied in the present work to establish that
hedonic and eudaimonic domains co-exist among the workers, those were working
in two factories of an aeronautical complex. This was conducted to check
established propositions related with cross cultural populations. Two almost
identical groups of participants consisting of 61 subjects including 50 males
and 11 females were tested. These participants were working in two separate
factories in an aeronautical complex. Randomized group design was implied.
Subjective well-being (SWB) by (Diener, Emmons, Larsen & Griffin, 1985) and
Subjective Happiness Scale by (Lyubornisky, Dickerhoof, Boehm and Sheldon,
2011) was administered to test the propositions. SPSS regression model was
implied, happiness found to be explainable by wellbeing F(1,59) = 7.86, p <
.005, R2 = 0.118 moreover, wellbeing significantly predicted happiness, B =
-0.333, t(59) = -2.804, p = .007., based on the sample, a one-unit increase in
wellbeing found leading to a 0.333 unit decrease in happiness. The study provided
useful information about the co-existence of wellbeing and happiness providing
useful information about human factor and organizational productivity.
IMPACT OF NATIONAL DISASTER COVID-19, INDONESIA TOWARDS ECONOMIC RECESSION
Authors: naryono endang
Published: April 2020

Covid-19 or the corona virus is a virus that has become a disaster and a global humanitarian disaster began in December 2019 in Wuhan province in China, April 2020 the spread of the corona virus has spread throughout the world making the greatest humanitarian disaster in the history of human civilization after the war world II, Already tens of thousands of people have died, millions of people have been infected with the conona virus from poor countries, developing countries to developed countries overwhelmed by this virus outbreak. Increasingly, the spread follows a series of measurements while patients who recover recover from a series of counts so that this epidemic becomes a very frightening disaster plus there is no drug or vaccine for this corona virus yet found, so that all countries implement strategies to reduce this spread from social distancing, phycal distancing to with a city or country lockdown.
perangkat keras komputer
Authors: asiah nur
Published: April 2020

Perangkat keras komputer atau disebut juga hardware merupakan seluruh perangkat komputer yang dapat di lihat secara fisik atau dapat diraba secara nyata, yang berfungsi untuk mendukung proses berjalannya komputer dan saling bekerja sama untuk mencapai tujuan dalam sistem pengoperasian komputer tersebut.Dalam sebuah komputer terdiri dari beberapa perangkat yang di perlukan untuk menjadi satu kesatuan dan menjalankan fungsi dari komputer tersebut sesuai dengan kebutuhan dari pengguna. Perangkat-perangkat tersebut berjalan sesuai dengan fungsinya masing- mengolah data, informasi, perintah-perintah mulai dari input, proses, penyimpanan dan diterjemahkan menjadi output.Perlunya kita mengenal dari beberapa perangkat tersebut adalah agar kita mengetahui cara kinerja komputer. Bagaimana cara memasukkan data, mengolah, memproses, menyimpan dan juga mencetak hasil kinerja kita. Perlu kita ketahui perangkat keras (hardware) komputer adalah alat-alat dari komputer sendiri.
PERANGKAT KERAS KOMPUTER
Authors: Daulay Nur Jannah
Published: April 2020

Perangkat keras komputer adalah bagian dari sistem komputer sebagai perangkat yang dapat diraba, dilihat secara fisik, dan bertindak untuk menjalankan instruksi dari perangkat lunak (software). Perangkat keras komputer juga disebut dengan hardware. Hardware berperan secara menyeluruh terhadap kinerja suatu sistem komputer. Perangkat keras merupakan bagian komputer yang mudah dilihat dan sangat penting.
PERANGKAT KERAS KOMPUTER
Authors: deby Yosi sinta
Published: April 2020

Pada zaman dahulu komputer suatu pekerjaan ataupun jabatan yang telah dikelola oleh seseorang manusia untuk hal yang dikerjakan secara spesifik yang terkait counting mana pun hitung mengkalkulasi. untuk menolong pekerja dalam menyelesaikan tugasnya maka dari itu terbuatlah suatu sistem yang pada akhirnya diberi nama komputer. tetapi dengan adanya perubahan-perubahan perkembangan di masa ini maka pengertian komputer juga banyak beralih sesuai sama konteks nya.
Evaluative Conditioning without awareness: Replicable effects do not equate replicable inferences
Authors: Hussey Ian , Hughes Sean
Published: April 2020

Moran et al.’s (2020) primary analysis successfully replicated the surveillance task effect obtained by Olson and Fazio (2001). This effect is often treated as evidence for attitude formation in the absence of awareness. However, such an inference requires that ‘aware’ participants are successfully excluded from consideration. We present evidence that the awareness exclusion criterion used by Olson and Fazio (2001) – the only one to produce a significant effect in the replication – is a poor measure of awareness: it is overly lax, noisy, and demonstrates heterogeneity between sites. A new meta-analysis of the RRR data using a stricter compound awareness exclusion criterion that prioritized sensitivity (N = 665) demonstrated a non-significant and near-zero effect size (Hedges’ g = 0.00, p = .983). A Bayes Factor analysis demonstrated strong evidence for the null hypothesis (BF10 = 0.04). When subjected to a more severe test, Moran et al.’s (2020) data does not support the ‘unaware Evaluative Conditioning’ hypothesis. Results serve to highlight the importance of distinguishing between a replicable statistical effect and a replicable inference regarding a verbal hypothesis. All data and code available at osf.io/ugrjh.
Perceptual insensitivity to the modulation of interoceptive signals in depression, anxiety, and substance use disorders
Authors: Smith Ryan , Feinstein Justin , Kuplicki Rayus , Forthman Katherine Lynne , Stewart Jennifer , Paulus Martin P , Investigators T , Khalsa Sahib S.
Published: April 2020

This study employed a series of heartbeat perception tasks to assess the hypothesis that cardiac interoceptive processing in individuals with depression/anxiety (N=221), and substance use disorders (N=136) is less flexible than that of healthy individuals (N=53) in the context of physiological perturbation. Cardiac interoception was assessed via heartbeat tapping when: (1) guessing was allowed; (2) guessing was not allowed; and (3) experiencing an interoceptive perturbation (inspiratory breath hold) expected to amplify cardiac sensation. Healthy participants showed performance improvements across the three conditions, whereas those with depression/anxiety, and substance use showed minimal improvement. Machine learning analyses suggested that individual differences in these improvements were negatively related to anxiety sensitivity, but explained relatively little variance in performance. These results reveal a perceptual insensitivity to the modulation of interoceptive signals that was evident across several common psychiatric disorders, suggesting that interoceptive deficits in the realm of psychopathology manifest most prominently during states of homeostatic perturbation.
COVID-19 Outbreak Enhances Making Meaning in Negative Experiences: Evidence from China
Authors: Yang Ziyan , Ji L J , Yang Ying , Wang Xiaoou , Zhang Mingyang , Xie Yiping , Bao Han-Wu-Shuang , zhu  , Su Zhan , Zhou Wan , Chen Jun , Jing Yiming , Cai Huajian
Published: April 2020

The present research investigated whether the outbreak of COVID-19 would increase Chinese participants’ tendency of seeing meaning in negative experiences (MINE). A longitudinal study (Study 1, N = 2535) showed that Chinese college students reported higher tendency of MINE during the outbreak of COVID-19 than three months before the outbreak. A cross-sectional study (Study 2) investigated a large student sample (N = 16096) and a large non-student sample (N = 11446) during the outbreak of COVID-19 in China and consistently showed that participants who were encountering high disease threat reported stronger perceived threat as well as greater tendency of MINE than those who were encountering low disease theat. Furthermore, the heightened perception of threat accounted for the heightened tendency of MINE. These results suggest that the COVID-19 outbreak makes Chinese more likely to see meaning in negative experiences, which may provide benefits for coping.
Does place visualisation increase household preparedness for natural hazard events? A longitudinal intervention
Authors: Wallis Amanda , Fischer Ronald
Published: April 2020

Novel approaches are needed to increase preparedness behaviours in populations with high disaster risk. Crucially, such approaches need to take into account the relationships that people have with place. We report a randomised controlled trial to test the effectiveness of an online place attachment mental visualisation task to increase preparedness behaviours. Findings from a pilot (Study 1) using pre and post-test measures showed mixed evidence for the influence of mental visualisation on place attachment. Using a pre-registered randomised controlled trial with a two-week follow-up in a community sample (Study 2), we expected that visualising one’s house or neighbourhood would result in stronger intentions to prepare, and greater implementation of preparedness behaviours at a follow-up, when compared to visualising a neutral place. Findings showed no main effect of visualisation on survival, mitigation, or community preparedness behaviours. These studies broadly indicate that our online mental place visualisation task was not sufficient to influence preparedness behaviours. We discuss implications of these findings for the advancement of place attachment theory and behaviour-change techniques.
Countering Demand for Ineffective Health Remedies: Do Consumers Respond to Risks, Lack of Benefits, or Both?
Authors: MacFarlane Douglas , hurlstone  , Ecker Ullrich K. H.
Published: April 2020

Objective: We tested whether targeting the illusion of causality and/or misperceptions about health risks had the potential to reduce consumer demand for an ineffective health remedy (multivitamin supplements).Design: We adopted a 2 (contingency information: no/yes) × 2 (fear appeal: no/yes) factorial design, with willingness-to-pay (WTP) as the dependent variable. The contingency information specified, in table format, the number of people reporting a benefit vs. no benefit from both multivitamins and placebo, plus a causal explanation for lack of efficacy over placebo. The fear appeal involved a summary of clinical-trial results that indicated multivitamins can cause health harms. The control condition received only irrelevant information. Main outcome measure: Experimental auctions measured people’s WTP for multivitamins. Experiment 1 (N = 260) elicited hypothetical WTP online. Experiment 2 (N = 207) elicited incentivised WTP in the laboratory.Results: Compared to a control group, we found independent effects of the contingency intervention (-22%) and the fear appeal (-32%) on WTP. The combined condition had the greatest impact (-50%) on WTP.Conclusion: We found compelling evidence that consumer choices are influenced by both perceptions of efficacy and risk. The combination of both elements can provide additive effects that appear superior to either approach alone.
Design and Implementation of Home Appliance Energy Monitoring Device
Authors: Sanni Shereefdeen O. , Olusuyi Kehinde O. , Mahmud Ismail
Published: April 2020

This paper presents the implementation of an energy monitoring device using Arduino Nano microcontroller to measure the power consumed by any individual electrical appliance in residential homes. It is also designed with the capability of sending measured electrical power parameters through SMS to owners when a request is made. The electrical energy and power are calculated based on measurements taken by Allegro ACS712 Hall effect current sensor and measured voltage over a time period. A novel feature of this device is its ability to also determine the start-up current of inductive loads. The device come in handy for homeowners who want to monitor the energy consumption of some appliances to reduce associated electricity bills. In addition, it could also be used for an energy audit of residential homes.
A Text Analysis of Data-Science Career Opportunities and US iSchool Curriculum
Authors: Washington Durr Angel Krystina
Published: April 2020

Data-science employment opportunities of varied complexity and environment are in growing demand across the globe. Data science as a discipline potentially offers a wealth of jobs to prospective employees, while traditional information science–based roles continue to decrease as budgets get cut across the United States. Since, historically, data are related closely to information, this research will explore the education of US iSchool professionals and compare it to traditional data-science roles being advertised within the job market. Through a combination of latent semantic analysis of over 1,600 job postings and iSchool course documentation, the aim of the article is to explore the intersection of library and information science and data science. It is hoped that these research findings will guide future directions for library and information science professionals into data science–driven roles, while also examining and highlighting the data-science techniques currently driven by the education of iSchool professionals. In addition, the aim is to understand how data science could benefit from a mutually symbiotic relationship with the field of information science, since, statistically, data scientists spend too much time working on data preparation and not nearly enough time conducting scientific inquiry. The results of this examination will potentially guide future directions of iSchool students and professionals toward more cooperative data science roles and guide future research into the intersection between iSchools and data science and possibilities for partnership.
Teaching Leadership Lessons through the Camera Lens
Authors: Singh Rajesh , Widén Gunilla
Published: April 2020

Movies appeal to people globally and can be used as a very valuable intellectual exercise in understanding diverse workplace settings, stimulating curiosity toward other cultures, and learning the nuances of leading and managing in a global information context. This study demonstrates how a learning experience involving movies can be utilized in complementing existing pedagogical approaches for imparting leadership lessons. The findings from 101 LIS students’ reflections reveal that a majority of students’ (87%) perspectives about leadership either “changed” or “reinforced” their existing beliefs after studying leadership concepts portrayed in movies. Overall, the findings revealed students’ critical thinking and take-away lessons about leadership, regardless of their response about leadership perspectives (changed, reinforced, or unchanged). This study indicates that by utilizing media in leadership education through carefully crafted pedagogy, LIS instructors can provide students with more realistic examples of positive and negative leadership in a global context.
MODELLING NANO-TECHNOLOGICAL PROCESSES OF OIL EMULSIONS FORMATION AND DESTRUCTION
Authors: Abasova Inara Afrail
Published: April 2020

It is shown that oil preparation process is related to nanotechnologies, since they are carried out at the Nano-dimensional level consisting in the charge interaction of mono and polyvalent ions being present in interacting environments of oil and reservoir (intermediate) water. Taking into account specific features (Nano-phenomena) of oil emulsion formation and destruction, a mathematical model for thermochemical oil dehydration process is proposed. As it is known, the main processes of formation and destruction of AC at the interfacial section (oil-water) occur at the molecular level, and molecular-surface phenomena (Nano-phenomena) are dominant in the process of oil preparation. First of all, this is the charge interaction of nano-dimensional particles, manifested in the form of physicochemical adsorption of natural emulsifiers on the surface of EWD, wetting the armoring casings of the latter (with corresponding demulsifier interaction), ion-exchange formation of a double electric layer (DEL) on surfaces of EWD and mechanical impurities (solid particles of clay, quartz, limestone, dolomite, iron sulfide, etc.). Consequently, the modeling of these processes is an urgent task, and the article is dedicated to above-mentioned problem.
ПРОГНОЗУВАННЯ ЯКОСТІ ВОДИ В РІЧКАХ ДУНАЙ ТА СІВЕРСЬКИЙ ДОНЕЦЬ ЗА ДОПОМОГОЮ ГЕОІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ
Authors: Васенко О. Г.  , Брук В. В.  , Карлюк А. А.  , Свиридов Ю. В.
Published: April 2020

For forecasting of the change of water quality in water object the geographic information system (GIS) of the ecological monitoring had been designed. The geographic information system was applied to analyze the water quality of the Danube and Seversky Donets. With the help of GIS, the main trends of changes in water quality indicators of the Danube Delta were identified. In the Danube River, for the most part, there was a tendency for improvement of water quality during the study period, the tendency for deterioration of water quality was determined only by the indicator of manganese. The tendency for deterioration of water quality was observed in the Siverskyi Donets River by the following indicators: suspended matter and ammonia nitrogen. The main trends of changes in water quality indicators have also been identified in the lakes (Chaika, Lychevoe), which influence the formation of water quality of the Siverskyi Donets River. In Lake Chaika there is a tendency to deteriorate in quality: weighed substances; nitrogen nitrate, chlorides and iron. In this case, the values of some indicators in Lake Chaika (BOD-5 and total iron), in Lake Lichovo (COD, BOD-5, nitrite nitrogen) and in the Siverskyi Donets River (overlying districts, ammonium nitrogen) will be several times higher fishery maximum permissible concentration.
Predictors of an academic career among fellowship-trained open vascular and endovascular neurosurgeons
Authors: Khalafallah Adham M. , Jimenez Adrian E. , Caplan Justin M. , McDougall Cameron G. , Huang Judy , Mukherjee Debraj , Tamargo Rafael J.
Published: April 2020

OBJECTIVE

Although previous studies have explored factors that predict an academic career among neurosurgery residents in general, such predictors have yet to be determined within specific neurosurgical subspecialties. The authors report on predictors they identified as correlating with academic placement among fellowship-trained vascular neurosurgeons.

METHODS

A database was created that included all physicians who graduated from ACGME (Accreditation Council for Graduate Medical Education)–accredited neurosurgery residency programs between 1960 and 2018 using publicly available online data. Neurosurgeons who completed either open vascular or endovascular fellowships were identified. Subsequent employment of vascular or endovascular neurosurgeons in academic centers was determined. A position was considered academic if the hospital of employment was affiliated with a neurosurgery residency program; all other positions were considered non-academic. Bivariate analyses were conducted using Fisher’s exact test or the Mann-Whitney U-test, and multivariate analysis was performed using a logistic regression model.

RESULTS

A total of 83 open vascular neurosurgeons and 115 endovascular neurosurgeons were identified. In both cohorts, the majority of neurosurgeons were employed in academic positions after training. In bivariate analysis, only 2 factors were significantly associated with a career in academic neurosurgery for open vascular neurosurgeons: 1) an h-index of ≥ 2 during residency (OR 3.71, p = 0.016), and 2) attending a top 10 residency program based on U.S. News and World Report rankings (OR 4.35, p = 0.030). In bivariate analysis, among endovascular neurosurgeons, having an h-index of ≥ 2 during residency (OR 4.35, p = 0.0085) and attending a residency program affiliated with a top 10 U.S. News and World Report medical school (OR 2.97, p = 0.029) were significantly associated with an academic career. In multivariate analysis, for both open vascular and endovascular neurosurgeons, an h-index of ≥ 2 during residency was independently predictive of an academic career. Attending a residency program affiliated with a top 10 U.S. News and World Report medical school independently predicted an academic career among endovascular neurosurgeons only.

CONCLUSIONS

The authors report that an h-index of ≥ 2 during residency predicts pursuit of an academic career among vascular and endovascular neurosurgeons. Additionally, attendance of a residency program affiliated with a top research medical school independently predicts an academic career trajectory among endovascular neurosurgeons. This result may be useful to identify and mentor residents interested in academic vascular neurosurgery.
Strategy for obtaining solid fusion at L5–S1 in adult spinal deformity: risk factor analysis for nonunion at L5–S1
Authors: Lee Ki Young , Lee Jung-Hee , Kang Kyung-Chung , Shin Sung Joon , Shin Won Ju , Im Sang-Kyu , Park Joon Hong
Published: April 2020

OBJECTIVE

Maintaining lumbosacral (LS) arthrodesis and global sagittal balance after long fusion to the sacrum remains an important issue in the surgical treatment for adult spinal deformity (ASD). The importance and usefulness of LS fixation have been documented, but the optimal surgical long fusion to the sacrum remains a matter for debate. Therefore, the authors performed a retrospective study to evaluate fusion on CT scans and the risk factors for LS pseudarthrosis (nonunion) after long fusion to the sacrum in ASD.

METHODS

The authors performed a retrospective study of 59 patients with lumbar degenerative kyphosis (mean age 69.6 years) who underwent surgical correction, including an interbody fusion of the L5–S1, with a minimum 2-year follow-up. Achievement of LS fusion was evaluated by analyzing 3D-CT scans at 3 months, 6 months, 9 months, 1 year, and 2 years after surgery. Patients were classified into a union group (n = 36) and nonunion group (n = 23). Risk factors for nonunion were analyzed, including patient and surgical factors.

RESULTS

The overall fusion rate was 61% (36/59). Regarding radiological factors, optimal sagittal balance at the final follow-up significantly differed between two groups. There were no significant differences in terms of patient factors, and no significant differences with respect to the use of pedicle subtraction osteotomy, the number of fused segments, the proportion of anterior versus posterior interbody fusion, S2 alar iliac fixation versus conventional iliac fixation, or loosening of sacral or iliac screws. However, the proportion of metal cages to polyetheretherketone cages and the proportion of sacropelvic fixation were significantly higher in the union group (p = 0.022 and p < 0.05, respectively).

CONCLUSIONS

LS junction fusion is crucial for global sagittal balance, and the use of iliac screws in addition to LS interbody fusion using a metal cage improves the outcomes of long fusion surgery for ASD patients.
Minimally invasive foramen magnum durectomy and obexostomy for treatment of craniocervical junction–related syringomyelia in adults: case series and midterm follow-up
Authors: Mandel Mauricio , Ferreira da Silva Igor Araújo , Paiva Wellingson , Li Yiping , Steinberg Gary K. , Teixeira Manoel Jacobsen
Published: April 2020

OBJECTIVE

Craniocervical junction–related syringomyelia (CCJS) is the most common form of syringomyelia. Approximately 30% of patients treated with foramen magnum decompression (FMD) will show persistence, recurrence, or progression of the syrinx. The authors present a pilot study with a new minimally invasive surgery technique targeting the pathophysiology of CCJS in adult patients.

METHODS

The authors retrospectively analyzed the clinical and radiological features of a consecutive series of patients treated for CCJS. An FMD and FM durectomy were performed through a 1.5- to 2-cm skin incision. Then arachnoid adhesions were cleared, creating a permanent communication from the fourth ventricle to the new paraspinal extradural cavity (obexostomy) and with the spinal subarachnoid space. The hypothesis was that the new CSF pouch acts like a pressure leak, interrupting the CCJS pathogenesis.

RESULTS

Twenty-four patients (13 female, 21–61 years old) were treated between 2014 and 2018. The etiology of CCJS was Chiari malformation type I (CM-I) in 20 patients (83.3%), Chiari malformation type 0 (CM-0) in 2 patients (8.3%), and CCJ arachnoiditis in 2 patients (8.3%). Two patients underwent reoperations after failed FMD for CM-I at other institutions. No major surgical complication occurred. One patient had postoperative meningitis with no CSF fistula. On postoperative MRI, shrinkage of the syrinx was seen in all patients. No patients experienced recurrence of the CCJS. No patient required a subsequent operation. The mean duration of surgery was 72 ± 11 minutes (mean ± SD), and blood loss was 35–80 ml (mean 51 ml). Follow-up ranged from 12 to 58 months. The average overall improvement in modified Japanese Orthopaedic Association scores was 10% (p < 0.001). The Odom scale showed that 19 patients (79.1%) were satisfied, 4 (16.7%) remained the same, and 1 (4.2%) reported a poor outcome. All patients experienced postoperative improvement in perception of quality of life (p < 0.001).

CONCLUSIONS

Minimally invasive FM durectomy and obexostomy is a safe and effective treatment for CCJS and for patients who have not responded to other treatment.
Support Vector Regression for Modeling Effect of Education Rate on Life Expectancy Rate in Indonesia
Authors: Ghazali Muhammad , Fitriati Ita , Purnamasari Ramdani
Published: April 2020

Life Expectancy Rate is the average number of years of life that is lived by someone who has reached a certain age. Life Expectancy is a tool to evaluate the government performance in improving the prosperity of the people. Studies on the factors that influence Life Expectancy Rate are needed to reach more accurate mathematics model to provide a better consideration for the government to determine the direction of future development policies. The data used in this study were derived from SUSENAS data with the objects of observations are all districts/cities in Indonesia in 2012. In this research, Support Vector Regression (SVR) method is used to estimate the effect of education factor which is represented by length of education by years (X) on Life Expectancy Rate (Y). Support Vector Regression (SVR) model in this research used several different kernels such as  polynomial kernel, RBF and Exponential RBF (ERBF) to find the best model. The best model criterion is the model that produces the largest R2 value. The best model resulted in this research is a model that uses Exponential RBF kernel.
The Influence of Rhythmic Gymnastics to Physical Fitness Level in State Vocational School
Authors: Adam Geo , Resita Citra
Published: April 2020

The problem in this study is the low level of physical fitness of class X students of SMK Negeri 1 Cikampek. This research aims to know the influence of rhythm gymnastics activity against physical fitness level. This research uses experimental methods with quantitative approach. The population in this research totalled 622 students. Sample research amounted to 29 students with engineering cluster random sampling. The collection of data on research uses of physical fitness test Indonesia. The data were analyzed using t-test with the results of the calculation of t-count of 7.07 compared to t-table 2.16. The results showed that there is the influence of rhythm gymnastics activity against physical fitness level.
Analysis of The Style of Learning Based on Visual, Auditorial, Kinesthetic on Students of Computer System
Authors: Putri Ni Wayan Suardiati , Suryati Ni Kadek
Published: April 2020

This study aims to describe the results of analysis of student learning styles based on Visual, Auditorial, Kinesthetic Computer System Study Program Class of 2019. The research method used is descriptive. Descriptive research was chosen because the researcher would describe and present a complete picture of the condition or relationship by describing each variable. The sample selection is done by purposive random sampling. The instruments used in this study were visual, auditory, and kinetic learning style questionnaires. Based on the research results it is known that the students of the Computer System Study Program in 2019 have a tendency towards kinesthetic learning styles. From 124 students, it was found that 13% Visual, 35% Auditorial, 42% Kinesthetic, 3% Combined Visual and Auditorial, 5% Combined Visual and Kinesthetic, and 2% Combined Auditorial and Kinesthetic.
Predicting fire resistance ratings of timber structures using artificial neural networks
Authors: Tung Pham Thanh , Hung Pham Thanh
Published: April 2020

This paper describes a method to predict the fire resistance ratings of the wooden floor assemblies using Artificial Neural Networks. Experimental data collected from the previously published reports were used to train, validate, and test the proposed ANN model. A series of model configurations were examined using different popular training algorithms to obtain the optimal structure for the model. It is shown that the proposed ANN model can successfully predict the fire resistance ratings of the wooden floor assemblies from the input variables with an average absolute error of four percent. Besides, the sensitivity analysis was conducted to explore the effects of the separate input parameter on the output. Results from analysis revealed that the fire resistance ratings are sensitive to the change of Applied Load (ALD) and the number of the Ceiling Finish Layer (CFL) input variables. On the other hand, the outputs are less sensitive to a variation of the Joist Type (JTY) parameter.

Keywords:

artificial neural networks; fire resistance; wooden floor assembly; sensitivity analysis.
Effect of hydraulic retention time on nitrogen removal in domestic wastewater by partial nitritation and Anammox processes
Authors: Hanh Nguyen Thi My , Hoa Tran Thi Hien
Published: April 2020

The nitrogen treatment technology using the Anammox process is known to have advantages over conventional technology of nitrification - denitrification. For the purpose of evaluating the effect of hydraulic retention time to nitrogen removal in domestic wastewater by Anammox process, the authors conducted the study on partial nitritation and Anammox reactors, separately. Partial nitritation (PN) reactor used Felibendy plate material with Nitrosomonas bacteria while Anammox (AX) reactor used Felibendy cubes carrier material with strain Candidatus Brocadia anammoxidans. This study was implemented during 210 days. The nitrogen treatment efficiency of the system was evaluated with different hydraulic retention times (HRTs). The short HRT of 4.5 hours in the AX reactor affected to the total nitrogen treatment efficiency is low of 52.76 ± 1.29%. With the hydraulic retention times in PN + AX reactors of 9 and 6 hours, the effluent quality met the requirements of B-column according to QCVN 14:2008/BTNMT or QCVN 40:2011/BTNMT.

Keywords:

Nitrosomonas; Candidatus Brocadia anammoxidans; partial nitritation process; Anammox process; nitrogen treatment.
On Statement and Solution of Optimization Problem of Timbral Space Trajectories Design
Authors: Rogozinsky G. , Tarantsev A.
Published: April 2020

This article presents the definition, the statement and the solution of problem optimization for the trajectory between pairs of points in multidimensional timbral space. We see the solution which is implimented on Pareto optimality multiplicative and additive criteria, based on the example of given point set and the space of dimension 3. For given point set and the space of dimension 3, we present the corresponding, The obtained results define the method of timbral spaces for the non-speech audial systems reporting, also known as the sonification systems.
Identification of Processor’s Architecture of Executable Code Based on Machine Learning. Part 1. Frequency Byte Model
Authors: Buinevich M. , Izrailov K.
Published: April 2020

This article shows us the study results of a method for identifying the processor architecture of an executable code based on machine learning. In the first part of the article we see an overview of existing solutions for machine code identifying and we see how the author makes a new method assumption. The author considers features of the machine code instructions and build its frequency-byte model. There is a processor architecture identification scheme, which is based on this model. Apart from that we see the frequency signatures which are provided for the following Top 10 processor architectures: amd64, arm64, armel, armhf, i386, mips, mips64el, mipsel, ppc64el, s390x.
Methodology for Detecting Anomalous Interaction of Users with Information Assets to Identify Insider Activity
Authors: Polyanichko M.
Published: April 2020

The article describe us that the identification of insiders and insider activities in the organization is an actual direction of ensuring information security, since the high level of software development and hardware information protection brings the malicious actions of legitimate users to the fore. This article discusses the methodology which allows to identify anomalies in the organization’s employees interaction with information assets and its applicability is assessed in the context of work to detect malicious activities of insiders.
Review of SWOG S1314: Lessons from a Randomized Phase II Study of Co-Expression Extrapolation (COXEN) with Neoadjuvant Chemotherapy for Localized, Muscle-Invasive Bladder Cancer
Authors: Boxley Peter , Plets Melissa , Flaig Thomas W.
Published: April 2020

SWOG1314 is a randomized phase II study of co-expression extrapolation (COXEN) with neoadjuvant chemotherapy for localized, muscle-invasive bladder cancer. COXEN is a biomarker approach in which predictive biomarkers are developed using in vitro data, which may then be applied directly into a clinical testing application. Two separate Gene Expression Models (GEMs), one for the Methotrexate, Vinblastine, Doxorubicin, Cisplatin (MVAC) regimen and another for gemcitabine plus cisplatin (GC) were tested in S1314. The lessons learned from the development and operationalization of the S1314 clinical trial are described in detail, which may help to inform the future trials of predictive biomarkers for urothelial carcinoma in the neoadjuvant setting. Specific areas addressed include: The need for broad support from the bladder cancer community, planning for non-evaluable subjects, defining adequate neoadjuvant treatment, defining adequate tissue collection, setting expectations in phase II clinical studies of predictive biomarkers, and maximizing the impact of the samples collected in these studies for broader biomarker development. With a large number of newly available treatments in advanced urothelial carcinoma in the last few years, more investigations of these agents in the neoadjuvant setting is anticipated. There will be a great need for the development of predictive biomarkers in conjunction with the use of these agents in the preoperative setting. Insights from S1314 may provide useful information and lessons learned in this development.
Effect of Wii Fit© Exercise on Balance of Older Adults with Neurocognitive Disorders: A Meta-Analysis
Authors: Sultana Munira , Bryant Dianne , Orange J.B. , Beedie Taylor , Montero-Odasso Manuel
Published: April 2020

Background:

Exercise is beneficial to maintain balance. Wii Fit©, a video game-based exercise, offers an enjoyable way to exercise and is feasible for older adults with neurocognitive disorders (NCD).

Objective:

To evaluate the effects of Wii Fit© exercise training on the balance of older adults with NCD.

Methods:

Systematic review and meta-analysis of randomized control trials using Cochrane collaboration tools. The participants were older adults (60 years and over) with NCD. Balance was measured with Berg Balance Scale (BBS) and Timed Up and Go (TUG). Two reviewers independently searched, selected, extracted data, assessed risk of biases, and determined the quality of evidence. Outcomes were evaluated using Grading of Recommendations Assessment, Development, and Evaluation (GRADE). A meta-analysis was performed.

Results:

The literature search identified 522 source documents of which titles and abstracts were reviewed for 428 after removing 94 duplicates. The reviewers selected five studies out of 50 after a full text review. The overall effect of Wii Fit© exercise training on BBS was moderate, significant, and clinically meaningful (standardized mean difference [SMD] = 0.5 standard deviation [SD] [95% confidence interval CI] 0.08, 0.84]). No effect was observed with TUG scores (SMD = 0.00 SD [95% CI –0.44, 0.44]). The GRADE quality of evidence was very low.

Conclusion:

Wii Fit© exercise training has a positive effect on balance in older adults with NCD. However, further research with sufficient power is needed to evaluate its effectiveness.