bluuebunny/crossref_metadata_2025 huggingface dataset:
Improving Students Performance in Small-Scale Online Courses - A Machine Learning-Based Intervention
Authors: Azimi Sepinoud , Popa Carmen-Gabriela , Cucić Tatjana
Published: November 2020

The birth of massive open online courses (MOOCs) has had an undeniable effect on how teaching is being delivered. It seems that traditional in-class teaching is becoming less popular with the young generation – the generation that wants to choose when, where and at what pace they are learning. As such, many universities are moving towards taking their courses, at least partially, online. However, online courses, although very appealing to the younger generation of learners, come at a cost. For example, the dropout rate of such courses are higher than that of more traditional ones, and the reduced in-person interaction with the teachers results in less timely guidance and intervention from the educators. Machine learning (ML)-based approaches have shown phenomenal successes in other domains. The existing stigma that applying ML-based techniques requires a large amount of data seems to be a bottleneck when dealing with small-scale courses with limited amounts of produced data. In this study, we show not only that the data collected from an online learning management system could be well utilized in order to predict students’ overall performance but also that it could be used to propose timely intervention strategies to boost the students’ performance level. The results of this study indicate that effective intervention strategies could be suggested as early as the middle of the course to change the course of students’ progress for the better. We also present an assistive pedagogical tool based on the outcome of this study, to assist in identifying challenging students and in suggesting early intervention strategies.
Satellite Imagery Noising With Generative Adversarial Networks
Authors: Zaytar Mohamed Akram , El Amrani Chaker
Published: November 2020

Using satellite imagery and remote sensing data for supervised and self-supervised learning problems can be quite challenging when parts of the underlying datasets are missing due to natural phenomena (clouds, fog, haze, mist, etc.). Solving this problem will improve remote sensing data augmentation and make use of it in a world where satellite imagery represents a great resource to exploit in any big data pipeline setup. In this paper, the authors present a generative adversarial network (GANs) model that can generate natural atmospheric noise that serves as a data augmentation preprocessing tool to produce input to supervised machine learning algorithms.
Lean Manufacturing Towards Sustainability
Authors: Mohapatra Biswajit , Singhal Deepak , Tripathy Sushanta
Published: November 2020

This paper intends to capture the attention of the lean researchers towards a shift of priorities of the various techniques implemented in lean and its journey of 40 years in the global scenario. In particular, the paper focuses on the implementation of lean techniques in India under the banner of sustainability. The paper focuses on three industries, a textile industry representing industrial revolution 1.0, an automotive spare parts industry representing industrial revolution 2.0, and an electrical/electronics industry representing industrial revolution 3.0, named ‘A', ‘B', and ‘C', respectively, and analyses the priorities of the eight best techniques of lean in the sustainability phase. The techniques are Kaizen, Poke-Yoke, 5S, Kanban, Just-in-Time, Jidoka, Takt-Time, and Heijunka. The industries ‘A' and ‘C' have Poke-Yoke as the most critical technique and have been ranked one whereas in industry ‘B' 5S emerges as the most prolific technique in the Indian context of these industries.
The Complications of Biologic Width in Esthetic Anterior Restorations: A Case Report and Review
Authors: Syahrial
Published: November 2020

The biologic width is a specific concept that refers to the dimensional relationship between epithelial attachment, sulcus depth, connective tissue attachment, and alveolar crest. A harmony and precise relationship between periodontal tissue and the restoration of the teeth is fundamental to ensure function and esthetic. Biologic width includes both the connective tissue attachment and the junctional epithelium and has a mean dimension of approximately 2 mm. Violation of biologic width can result in localized crestal bone loss, gingival recession, localized gingival hyperplasia, or a combination of these three. Maintenance of gingival health is one of the keys to the longevity of both the teeth and restorations. A clinical crown lengthening procedure is needed to establish the biologic width, in a condition where a restored tooth developed a subgingival caries, fractured below the gingival attachment or failed crown restoration. This article presents a case reports and review that utilized gingivectomy procedures to corrected the complications because of the violation of biologic width.
Glass Ionomer Cement (GIC) Surface Hardness after Addition of 5% Silica from Sea Sand
Authors: Sofya Pocut Aya , Rahmayani Liana , Saputra Apriliadi
Published: November 2020

Glass ionomer cement (GIC) is a restorative material that can release flour so as to prevent further caries, biocompatible, translucent, and anti-bacterial, low tensile strength, GIC has limitations that is short working time and cannot be used in areas of teeth that have large masticatory pressure, susceptible to fracture toughness. The addition of silica in GIC is one aspect that needs to be considered because silica has high hardness properties. The source of silica can be synthesized from sea sand which has a silica content of about 98%. This study aims to determine the difference in surface hardness from conventional GIC and GIC by the addition of 5% silica from sea sand. Cylinder-shaped specimens with a diameter of 5 mm and height of 2 mm, totaling 10 specimens, namely 5 conventional type II GIC specimens (control group) and 5 conventional GIC specimens with the addition of silica from sea sand (treatment group). Vickers Hardness Tester is used to measure the value of hardness. Data were analyzed using SPSS with unpaired t test. The results of the data show that there was no significant difference (p> 0.05) between the surface hardness of conventional GIC and GIC with the addition of silica from sea sand.
The Effects of Alcohol and Non-Alcohol Mouthwash on Oral Cavity Environmental Alterations (Salivary pH and Plaque Index)
Authors: Lindawati Yumi , Nazriyanti G. , Ritonga P.W.U. , Sari I.P.
Published: November 2020

Mouthwash is an additional mechanical oral cavity cleaning method which is known to reduce oral bacterias that causes plaque build ups. Mouthwash may and may not contain alcohol. The objective of this study was to determine the alterations on the oral cavity environment (salivary pH and plaque index) before and after gargling with alcohol and non-alcohol mouthwash, and to analyze which of the mouthwash is more effective. This study was an experimental study with one group pre test and post test experimental design. The subject of this study was 16 of University of Sumatera Utara’s female undergraduates whose age ranges from 18–23 years old and accorded to the inclusion and exclusion criteria. Subjects were divided in two groups, subjects were instructed to used the mouthwash twice a day for seven days, then salivary pH and plaque index were measured at third and seventh day of used. Repeated Annova test results shown a significant decreas on salivary pH and plaque index after gargled with mouthwash containing alcohol, in the non-alcohol mouthwash there was a significant decreased in plaque index but none on the salivary pH. Dependent T-test results shown that there were no difference in salivary pH and plaque index after gargled with alcohol containing and non-alcohol mouthwash. This study shows that non-alcohol mouthwash is better because there were a significant decrease in plaque index, without caused significant decreases in pH scores.
Apicoectomy and Enucleation on Maxillary Lateral Incisor with Radicular Cyst
Authors: Dian Fitriana Hesti , Kristanti Yulita , Hadriyanto Wignyo
Published: November 2020

Introduction. A radicular cyst is an odontogenic cyst originated from residual epithelial cells (remnants of Malassez cells) of periodontal ligaments with the previous history of chronic inflammation. The radicular cyst usually results from traumatized pulp or necrotic pulp that is left untreated. This study aimed to treat the maxillary lateral incisor with necrotic pulp and radicular cyst by apicoectomy, retrograde closure using mineral trioxide aggregate, followed by enucleation and bone graft application. Case Report. A 28-year-old female patient who suffered from recurrence pain and swelling in the right maxillary incisor area came to Gadjah Mada University Dental. The patient had a history of trauma on her maxillary right incisor 12 years ago. Vitality test, percussion test and palpation test showed negative results. Cone beam computed tomography radiograph showed circular radiolucent lesions with a firm radiopaque border surrounding the apical of tooth resulted in a cortical bone loss on the labial aspect. The lateral maxillary incisor was diagnosed as necrotic pulp with the radicular cyst. Conventional endodontic treatment was performed in two visits using calcium hydroxide as intracanal medicament followed by class I composite resin restoration. Apicoectomy procedure was performed on the third visit using mineral trioxide aggregate as retrograde filling material followed by enucleation of radicular cysts and application of bone graft as bone regeneration material. Three months of control after treatment showed good bone tissue regeneration. Post-operative control in the third month showed functional bone tissue regeneration. Conclusion. Apicoectomy and retrograde closure using aggregate mineral trioxide followed by enucleation and bone graft application is a treatment of choice for pulp necrosis with the radicular cyst.
Riflessioni sulle “tecnologie di riproduzione assistita”
Authors: Serra Angelo
Published: November 2020

Oggi tutti sanno che è possibile attraverso le “tecniche di riproduzione assistita” preparare in laboratorio “un figlio” per darlo a chi lo desidera. Le riflessioni proposte su quanto oggi possono offrire scienza e medicina, dopo 21 anni dal primo decisivo evento, vorrebbero essere soltanto una introduzione all’esame di alcuni aspetti umani e sociali coinvolti in queste tecnologie che implicano “la creazione di figli e la costruzione di famiglie, un valore sociale fondamentale” (ISLAT). Saranno articolate su tre direttrici: 1) la risposta data dalla scienza alla domanda di produrre un figlio, e le correlative implicanze etiche della sperimentazione sull’embrione umano; 2) la risposta data dalla medicina alla domanda di poter avere un “figlio” e “sano” e le correlative implicanze deontologiche ed etiche: con quale successo, con quali conseguenze; e 3) la ripercussione di queste nuove tecnologie sulla “famiglia” e, conseguentemente, sulla società.
Neghentropia: la Fisica e l’Inizio della Vita
Authors: Dedé A. , Incarbone C. , Campanella M.
Published: November 2020

Il punto di vista della Fisica, relativamente all’Inizio della Vita, viene illustrato usando (in maniera molto semplice e senza fare uso di formule) concetti quali Calore, Lavoro, Energia, Irreversibilità ed Entropia. In pratica, quando spermatozoo ed ovulo si uniscono avviene un silenzioso ma significativo cambiamento: tramite il loro lillipuziano ‘matrimonio’ i due gameti, entrambi destinati altrimenti a disgregarsi in poche ore, riescono ad invertire la normale, universale tendenza al ‘disordine’ (aumento dell’Entropia, come sancito dal Secondo Principio della Termodinamica) ed avviano un processo ‘a catena’ che trasformerà miliardi di caotiche molecole in un organismo perfettamente funzionante.

Sono anche riportate ulteriori considerazioni sull’argomento: innanzitutto, l’Irreversibilità è messa in relazione con il concetto di Probabilità nonchè la famosa questione della Freccia del Tempo (cioè la sua direzione di scorrimento); secondariamente, le informazioni sul DNA (il Progetto del singolo individuo) vengono chiaramente mostrate come l’unica cosa che effettivamente ‘sopravvive’ dall’iniziale agglomerato di atomi che costituiva la prima cellula; infine, considerando lo sviluppo umano (dal concepimento alla nascita) in termini di Percentuale di Accrescimento Giornaliera si riesce a vedere chiaramente come le prime fasi di vita embrionale risultano essere, in definitiva, le più significative in assoluto.

In pratica, persino la Fisica (apparentemente lontana dalle questioni della Vita e della Morte) può rappresentare una chiara ‘voce’ dalla parte di chi, nel grembo materno, non è ancora in grado di far valere le proprie ragioni: si tratta di un’altra piccola tessera nel vasto mosaico di opinioni, considerazioni, nonchè fatti irrefutabili fortemente a favore della vita umana dal suo effettivo inizio.
Accanimento terapeutico: esperienza in un reparto di cure palliative
Authors: Conti Adelaide , Zaninetta Giovanni
Published: November 2020

Gli Autori, prendendo spunto da una casistica di pazienti oncologici in fase avanzata, ricoverati e deceduti nell’Hospice Domus Salutis di Brescia nel triennio 1994-96, affrontano il tema dell’accanimento terapeutico nei malati terminali.

La casistica comprendente circa 800 pazienti, esamina oltre alla patologia dei singoli pazienti, la terapia farmacologica globale, comprendente sia le specialità farmaceutiche utilizzate, sia le trasfusioni, le infusioni, le pompe di infusione, l’uso di catetere vescicale, di catetere venoso centrale, di sondino naso-gastrico, di monitor cardiaco, di respiratore e l’effettuazione di manovre rianimatorie in fase terminale.

Affrontando gli aspetti etici e deontologici dell’accanimento terapeutico, esso viene distinto dalla cosiddetta “continuità terapeutica”, in opposizione all’astensionismo terapeutico. Scopo del lavoro è approfondire l’atteggiamento culturale di fronte a tali problematiche e la sua attenzione nella pratica clinica, tenendo conto che la casistica esaminata riguarda uno dei tre soli Hospices esistenti nel nostro Paese.
Per una giusta distribuzione delle risorse secondo la bioetica personalista
Authors: Palazzani Laura
Published: November 2020

L’autore individua i criteri etici per la distribuzione delle risorse sanitarie nella prospettiva della bioetica personalista. Partendo dalle premesse teoretiche del finalismo e del cognitivismo, l’articolo mostra la necessità del dovere/ diritto alla tutela della vita di ogni essere umano e del dovere/diritto alla cooperazione nella difesa del bene comune. L’autore analizza le implicazioni pratiche in riferimento alla questione della distribuzione delle risorse sanitarie, a livello macro e micro, discutendo i criteri principali anche confrontandosi con posizioni diverse in un contesto pluralistico.
La diagnosi prenatale preimpianto ed il Magistero della Chiesa cattolica
Authors: Golser Karl
Published: November 2020

Lo studio riassume quanto l’Enciclica Evangelium Vitae (1995) e la Dichiarazione Donum Vitae della Congregazione per la Dottrina della Fede 81987) affermano circa la possibilità di una diagnosi prenatale. Il principio al quale questo documenti si rifanno è l’assoluta tutela della vita umana fin dal momento della fecondazione.

Quindi gli esami sono leciti solo in quanto non danneggiano l’embrione o il feto e sono finalizzati e sono finalizzati alla sua terapia, ami alla sua uccisione. Riguardo alla diagnosi preimpianto vengono esaminati un documento dei Vescovi Francesi e uno dei Vescovi Tedeschi, mentre i menzionati documenti pontifici non ne entrano in merito.

Questa possibilità di diagnosi ha una valenza morale diversa, perché finora essa ha avuto una finalità orientata esclusivamente verso la selezione e distruzione di embrioni “difettosi”. Ciò è eugenismo ed è un netto contrasto con il principio della tutela di ogni vita umana.
La teoria della brain birth versus la teoria della brain death: una simmetria impossibile
Authors: Di Pietro Maria Luisa , Minacori Roberta
Published: November 2020

In simmetria con il paramento cerebrale quale modalità di accertamento della morte, viene proposto da più parti il riferimento alla comparsa di un sistema nervoso funzionante per identificare l’inizio dell’esistenza di un individuo umano. È la cosiddetta teoria della brain birth</> o della nascita cerebrale: ma più esattamente si potrebbe parlare di “teorie”, in quanto molteplici sono state le interpretazioni che ne sono state date.

In questo articolo vengono passate in rassegna le varie teorie della brain birth (di Goldenring Kushner, Burgess, Jones, etc.) e vengono analizzate criticamente le ragioni e le finalità di una tale proposta. Finalità - come è noto – meramente pratiche: si vuole individuare un limite prima del quale è possibile sopprimere o utilizzare l’embrione a scopi sperimentali e attuare così una tutela radualistica dello stesso; ragioni arbitrarie: ridurre l’uomo al suo cervello e il cervello alla capacità di coscientizzare.

Una proposta, quella della brain birth, che manca di fondamento biologico e ontologico e che vuole in modo indebito utilizzare un criterio che accerta il disordine e la disinterazione della morte per individuare l’inizio della vita, che ordine e proressione.
Helmet Fit Assessment and Concussion Risk in Youth Ice Hockey Players: A Nested Case-Control Study
Authors: Gamble Alexander S. D. , Bigg Jessica L. , Sick Stacy , Krolikowski Maciek , Patton Declan A. , Hagel Brent E. , Emery Carolyn A.
Published: November 2020

Context

Injury surveillance has shown that concussions are the most common injury in youth ice hockey. Research examining the criteria for ensuring the correct fit of protective equipment and its potential relationship with concussion risk is very limited.

Objective

To evaluate the association between helmet fit and the odds of experiencing a concussion among youth ice hockey players.

Design

Nested case-control within a cohort study.

Setting

Calgary, Alberta, Canada.

Patients or Other Participants

Data were collected for 72 concussed, 41 nonconcussion-injured, and 62 uninjured ice hockey players aged 11 to 18 years.

Main Outcome Measure(s)

Helmet-fit assessments were conducted across players and encompassed helmet specifications, condition, certification, and criteria measuring helmet fit. Using a validated injury-surveillance system, we identified participants as players with suspected concussions or physician-diagnosed concussions or both. One control group comprised players who sustained nonconcussion injuries, and a second control group comprised uninjured players. Helmet-fit criteria (maximum score = 16) were assessed for the concussed players and compared with each of the 2 control groups. The primary outcome was dichotomous (>1 helmet-fit criteria missing versus 0 or 1 criterion missing). Logistic and conditional logistic regression were used to investigate the effect of helmet fit on the odds of concussion.

Results

The primary analysis (54 pairs matched for age, sex, and level of play) suggested that inadequate helmet fit (>1 criterion missing) resulted in greater odds of sustaining a concussion when comparing concussed and uninjured players (odds ratio [OR] = 2.67 [95% CI = 1.04, 6.81], P = .040). However, a secondary unmatched analysis involving all participants indicated no significant association between helmet fit and the odds of sustaining a concussion when we compared concussed players with nonconcussion-injured players (OR = 0.98 [0.43, 2.24], P = .961) or uninjured players (OR = 1.66 [0.90, 3.05], P = .103).

Conclusions

Inadequate helmet fit may affect the odds of sustaining a concussion in youth ice hockey players. Future investigators should continue to evaluate this relationship in larger samples to inform helmet-fit recommendations.
Необходимые и достаточные условия продолжимости функции до функции Шура
Authors: Buslaev Viktor Ivanovich
Published: November 2020

В статье сформулирован и доказан критерий возможности продолжения функции, заданной своими значениями (с учетом кратностей) в некоторой последовательности точек круга $\mathbb D=\{ |z|<1\}$, до голоморфной в $\mathbb D$ функции, модуль которой не превосходит единицы. В случае, когда функция задается значениями своих производных в точке $z=0$, полученный критерий совпадает с известным критерием Шура.
Библиография: 16 названий.
Ренормализованные решения эллиптических уравнений с переменными показателями и данными в виде общей меры
Authors: Kozhevnikova Larisa Mikhailovna
Published: November 2020

В работе рассмотрен некоторый класс эллиптических уравнений второго порядка с переменными показателями нелинейностей и правой частью в виде общей меры Радона с конечной полной вариацией. Доказано существование ренормализованного решения задачи Дирихле как следствие устойчивости относительно сходимости правой части уравнения.
Библиография: 37 названий.
Sementes de Senegalia polyphylla (Fabaceae) atacadas por bruquíneos podem ser viáveis?
Authors: Fonseca Adriano Geraldo , Assis Júnior Sebastião Lourenço , Titon Miranda , Lemes Pedro Guilherme , Machado Evandro Luiz Mendonça
Published: November 2020

Este trabalho teve por objetivo analisar a germinação de sementes de Senegalia polyphylla (DC.) Britton & Rose (Fabaceae) atacadas por bruquíneos (Coleoptera: Chrysomelidae: Bruchinae). Frutos dessa espécie foram coletados em São Gonçalo do Rio Preto, MG. As sementes indenes e as danificadas por bruquíneos foram submetidas aos testes de germinação em cinco tratamentos, com 100 sementes cada. O melhor percentual de germinação foi obtido nas sementes sadias e lixadas. As sementes sadias embebidas em água apresentaram baixo percentual de germinação. O ataque de bruquíneos proporcionou redução na taxa de germinação, mas não impediu que esse processo ocorresse nas sementes danificadas.
XÂY DỰNG HỆ THỐNG THỰC NGHIỆM KHẢO SÁT ẢNH HƯỞNG CỦA CHẾ ĐỘ CẮT TỚI LỰC CẮT TRONG QUÁ TRÌNH GIA CÔNG TIỆN
Authors: TUẤN LÊ DUY , HƯNG NGUYỄN QUỐC
Published: November 2020

Cutting is a process of extensive stresses and plastic deformations. The high compressive and frictional contact stresses on the tool face result in a substantial cutting force R. Cutting forces are the factors for the evaluation of the cutting power in machining and influence the deformation of the workpiece, accuracy, chip formation and machinery system stability. This paper built an experiment system to investigate the influence of cutting parameters including feed f, depth of cut t, feed rate v to a tangential cutting force Pz on structural steel materials C45. The final results confirmed tolerance between theory and experiments 5% - 9%.
Temperature Flows in Railway Tunnels: Field Measurements of Frost Penetration
Authors: Andrén Anna , Dahlström Lars-Olof , Nordlund Erling
Published: November 2020

Even though extensive pre-grouting is carried out during the construction of tunnels, certain leakages and drips remain. These remaining leakages are remedied by a combination of post-injection and drainage measures with, for example, frost insulated drain mats, whose function is to prevent the cold tunnel air from reaching a leakage spot and causing water to freeze. Despite these measures, some water may still enter the tunnels and cause problems during winter with ice formations and frost shattering. Icicles, ice pillars and ice-covered roads and railway tracks require constant maintenance. If ice occurs in the fracture network close to the tunnel contour or in the interface between the rock and shotcrete, it can cause degradation of the load-bearing capacity of the tunnel and fall-outs of both materials. In tunnel sections with water leakage problems it is common to protect the load-bearing structure from freezing with insulated drainage systems. To determine where along the tunnel efforts must be made to prevent ice formation, the temperature conditions of tunnels must be investigated. This article presents parts of the results from field measurements in two Swedish railway tunnels. The measurements involves monitoring of air and rock temperatures, air pressure and air velocity.

Keywords: Frost penetration, ice formation, frost shattering, temperature measurement, maintenance, railway tunnel.
The importance of evidence assessment: Reanalyzing a Meta-analysis on the effect of Prophylactic Amiodarone, on Mortality after Acute Myocardial Infarction and Congestive Heart Failure.
Authors: Martí-Carvajal Arturo , Martí-Amarista Cristina
Published: November 2020

La amiodarona es un medicamento anti arrítmico que se usa como profilaxis después de un infarto agudo de miocardio (IM) y en
pacientes con insuficiencia cardíaca congestiva (ICC). Este estudio tiene como objetivo reevaluar los beneficios y daños clínicos de
la amiodarona en pacientes con IM y CHF, según los datos del estudio Amiodarone Trials Meta-Analysis Investigators (ATMAI). Con
este objetivo, realizamos un nuevo análisis de ATMAI donde dos autores extrajeron la información de los ensayos incluidos de forma
independiente; y otros dos autores comprobaron la veracidad de la información. De los 13 ensayos incluidos (6553 pacientes), ocho
ensayos (5101 pacientes) se realizaron en pacientes con IM y cinco ensayos (1452 pacientes) se realizaron en pacientes con ICC. En
general, la evidencia fue de baja a modesta, para todos los resultados debido al sesgo (principalmente selección y deserción) y la
imprecisión. Para los pacientes con IM, la amiodarona mostró un mayor riesgo de efectos secundarios (RR 1,72; IC del 95%: 1,32 a 2,25
I2: 74%) sin beneficio alguno en la disminución del riesgo de mortalidad por todas las causas (RR 0,87; IC del 95%: 0,69 a 1,1 I2: 40%)
en comparación con el placebo o ningún tratamiento. La amiodarona, sin embargo, se asoció con un menor riesgo de mortalidad
cardíaca (RR 0,83; IC del 95%: 0,7 a 0,99 I2: 0%) en comparación con placebo o ningún tratamiento. Para los pacientes con ICC, no
hubo diferencias entre la amiodarona y el placebo o ningún tratamiento, con respecto a la mortalidad por todas las causas (RR0,86; IC del 95%: 0,71 a 1,04 I2: 26%) y la mortalidad cardíaca (RR 0,82; IC del 95%: 0,64 a 1,04 I2
: 24%). Por tanto, nuestros resultados
no apoyan las conclusiones de ATMAI con respecto al efecto beneficioso de la amiodarona en la disminución de la mortalidad en pacientes con IM o ICC. La amiodarona se asoció más bien, con un alto riesgo de eventos adversos en personas con IM. El análisis secuencial de ensayos mostró que no se necesitan más ensayos.
Optimizing for Viability – Revamping Vacuum Distillation Unit in a Brownfield Project
Authors: Mokhtar Saiful Anuar Mohd , Mosir Marina
Published: November 2020

Revamping an existing column in an operating plant for a higher throughput is always a challenge especially when the column is already operating at its rated capacity. This is particularly true for a Vacuum Distillation Unit (VDU) column which involves multiple product and pump-around streams and associated auxiliary units like a steam ejector system. Optimizing the design and operation of the column, hence, is inevitable to ensure the viability of a brownfield project as it avoids major modifications required to the column and its associated auxiliary systems. This paper discusses how optimization was done on the design and operation of an existing VDU column in an oil refinery, avoiding major modifications of the associated ejector, steam, cooling water, sour water systems and heat exchanger network, allowing a brownfield project to stay commercially viable.
Requerimiento de unidades calor en el cultivo del amaranto
Authors: García Pereyra J. , Aviña Martínez G. N. , Rubio Garciano R. B. , Medina Medrano R. , Alvarado Gómez O. , Alejandre Inturbide G.
Published: November 2020

Se analizaron cinco genotipos de amaranto; cuatro de la especie Amaranthus hypochondriacus L.,153-5-3, 655, 653 y Criollo Tlaxcala y uno de la especie Amaranthus cruentus L., 33 en cuatro ambientes, contrastantes en clima y topografía ubicados en el norte de México. Los estudios se efectuaron entre el 15 de agosto de 2000 y el 15 de noviembre de 2002. El objetivo del presente trabajo  fue:  determinar  la interacción  genotipo  por ambiente (A x  G) en  el  requerimiento  de unidades (UC) calor en el desarrollo fenológico del cultivo y el rendimiento de grano (RG). Se utilizó un diseño experimental de bloques completos al azar con tres repeticiones para diferentes ambientes. Los resultados indican que para MC (Madurez comercial), Criollo Tlaxcala de A. hypochondriacus fue el de mayor requerimiento con 977 UC en el ambiente A1, en A2; 655, 33,653 presentaron comportamientos estadísticos similares con un requerimiento de 1475 UC cada uno, superando a Criollo Tlaxcala y 153-5-3 que requirieron de 1133 y 1473 UC, en A3 Criollo Tlaxcala fue el de menor requerimiento con 1384 UC, los demás genotipos estadísticamente fueron similares en el requerimiento de UC en promedio con 1568, para A4 los genotipos en estudio presentaron requerimientos en promedio de 315 UC. Los genotipos de mayor RG (p< 0.05) fueron 153-5-3 de A. hypochondriacus en el ambiente A1 con 2144 kg ha-1, en los ambientes A2 y A3 el genotipo 33 con 1637 y 1283 kg ha- 1, para A4 los genotipos 153-5-3 y 653 con y 1539 y 1562 kg ha-1 respectivamente.
Plan de exportación de mole con pollo deshebrado, al mercado de Shangái, China
Authors: González Salas Miguel Ángel , Mendo Muñoz Rubén de la Paz , Pérez Aquino Francisco Javier
Published: November 2020

La cocina mexicana es considerada una de las más exquisitas, debido a su excelente combinación de sabores, texturas y olores no conoce fronteras además China se ha dejado encantar por su sabor inconfundible. La apertura de China al mundo ayudó a que los productos mexicanos fueran más fáciles de exportar. Considerando lo anterior se diseñó un Plan de exportación que permitiera ingresar el mole con pollo deshebrado al mercado de Shanghái, China. Dentro del estudio de Mercado se estima una demanda de Alimentos Procesados en China a una Tasa Media de Crecimiento Anual del 7.5% entre 2012- 2020, siendo una ventaja para el proyecto. De manera general y con relación a la hipótesis de este proyecto concluimos que es viable exportar “Mole con pollo deshebrado” de la ciudad de Papantla, Veracruz, al mercado de Shanghái.
Potencial de rendimiento y variabilidad del maíz nativo (Zea mays L.) rojo en suelos ácidos de baja fertilidad en Acayucan, Veracruz
Authors: Alvarado Gómez Luis Carlos , Graillet Juárez Eduardo Manuel , Martínez Martínez Marina , Arieta Román Ronnie de Jesús , Fernández Figueroa José Antonio
Published: November 2020

Los maíces nativos (Zea mays L.) pigmentados, han tomado importancia, debido a sus interesantes propiedades nutraceúticas, además de son alternativa de un cultivo con un valor agregado para la industria, por estas razones, se realizó un ensayo con un maíz nativo rojo, en suelos ácidos y de baja fertilidad, del sur de Veracruz, con el objetivo de evaluar su comportamiento en esas condiciones y determinar su potencial productivo. Se utilizó un diseño experimental de bloque completos al azar, con cuatro repeticiones y dos tratamientos, T1 = plantas promedio, representativas de la población y T2= plantas superiores, con características deseables para alto rendimiento. Se utilizó la técnica del Análisis de Varianza y la comparación de medias por Tukey 0.05. Los resultados mostraron una alta variabilidad en crecimiento y rendimiento por planta, Sin embargo los rendimientos por ha fueron satisfactorios, 3,490 y 6,514 kg ha-1, para las plantas promedio y las plantas superiores, respectivamente. Esto pone en evidencia su alto potencial genético, ya que estos rendimientos se obtuvieron, en condiciones adversas de suelos ácidos y de baja fertilidad y la presencia de una severa sequía, atípica, que se presentó en ese ciclo de cultivo.
Diseño de una Incubadora de Tecnología Intermedia Agrícola, Forestal y Turismo Rural
Authors: Contreras Márquez Araceli Janett , Contreras Márquez Araceli Janett , Magaña Magaña José Eduardo , Villarreal Ramírez Víctor Hugo , Kiessling Davison Christian Mauricio , Escalera Ochoa Laura
Published: November 2020

La Facultad de Ciencias Agrícolas y Forestales -Universidad Autónoma de Chihuahua tiene un Centro de Negocios, donde se atiende a emprendedores y empresas, involucrando a profesores y alumnos. No obstante, es necesario que este tenga reconocimiento oficial por la Secretaria de Economía Federal. Es por eso que se propone que este centro sea una Incubadora de tecnología intermedia agrícola, forestal y turismo rural. En nuestro país, el 80% de las empresas que no tienen un adecuado acompañamiento durante su formación, fracasan en el primer año de puesta en marcha, en tanto cuando hay un buen acompañamiento la cifra de éxito se eleva hasta un 93% de permanencia. Factores como, la inseguridad, pobreza, desigualdad, falta de oportunidades educativas, rezagos en el campo, son limitantes que frenan la actividad emprendedora. Para alcanzar este objetivo se desarrolló  la  metodología  establecida  por  la  Secretaría  de  Economía  Federal,  que comprende desde la organización en aspectos administrativos, características del proceso de incubación hasta la orientación a emprendedores. Los principales resultados fueron los manuales: Manual de la organización, estructura de la organización, de procedimientos e inducción a emprendedores. Se identificaron los servicios que se ofrecen de acuerdo a la planta de maestros y la infraestructura con que se cuenta. Entre ellos la elaboración de proyectos de inversión, estudios de mercado, corridas financieras, recursos humanos, elaboración de planes estratégicos y mercadotecnia. La conclusión final es que este tipo de Incubadoras   promueven   el   emprendimiento   de   jóvenes   estudiantes,   profesores   y productores agrícolas, forestales y turismo rural.
Inseminación artificial a tiempo fijo en diferentes genotipos y su relación con preñez en vacas en la Amazonía Ecuatoriana
Authors: López J. C. , Moyano J. C. , Quinteros R. , Barbona I. , Barbona I. , Marini P. R. , I.C Daniel , Elorza P.
Published: November 2020

El objetivo fue estudiar si los protocolos de inseminación artificial a tiempo fijo (IATF) y las razas están relacionados con la preñez en vacas en la Amazonia Ecuatoriana. Se evaluaron 497 registros de servicios individuales desde Octubre de 2013 a Octubre de 2014 correspondientes a vacas de diferentes razas multíparas: Brahman (B), Brown Swiss (BS), Holstein Friesian (HF) y Charolaise (Ch). Se realizó una IATF con 497 vacas aplicando dos protocolos, diferenciándose solo  por el  tipo  de sales  de estradiol  utilizadas.  De las  497  vacas  inseminadas,  272  vacas quedaron  preñadas  el  55%  y  224  vacas  resultaron  vacías  el  45  %  siendo  p≤0,0001.  Los resultados  encontrados  entre  los  dos  protocolos  utilizados  y la  preñez  no  hubo  diferencias significativas p≥0,324. De las 210 vacas utilizadas en el protocolo Benzoato de Estradiol se preñaron el 57% de las vacas y el 43% fueron vacías, con el protocolo Cipionato de Estradiol de las 286 vacas inseminadas quedaron preñadas el 53% y el 47% de las vacas vacías. Las vacas HF fueron las que mayor porcentaje de vacías mostró independientemente del protocolo utilizado (28% de preñadas y 72% de vacías), con respecto al resto de las razas, (B 70% preñadas, BS 69% preñadas y las Ch 61% preñadas) en donde p≤0,001. Se concluye que no existen diferencias entre los protocolos utilizados (EC ó EB), sin embargo hay un efecto de raza en la tasa de preñez en AITF en la Amazonía Ecuatoriana.
Propiedades insecticidas de metabolitos secundarios de Fouquieria splendens Engelm (ocotillo)
Authors: Orozco Meléndez Laura R , García Muñoz Silvia A , Leyva Chávez Arwell N , González Aldana Ricardo A , Villalobos Pérez Elizabeth , Yáñez Muñoz Rosa María
Published: November 2020

Las reacciones químicas comunes de todos los seres vivos implican a los metabólitos primarios, sin embargo, otros compuestos se derivan de los anteriores, los metabólitos secundarios. Los usos  de  Fouquieria  splendens  Engelm  (ocotillo)  llegan  a  ser  variados,  sin  embargo,  no  se conocen  los  metabólitos  secundarios  responsables  de dicha  actividad,  por lo  que  el  primer objetivo fue determinar la actividad biológica de los extractos y fracciones. El material vegetal se colectó en el municipio de Aldama en el Estado de Chihuahua, el cual se secó y se molió, para la obtención de extractos acuosos y orgánicos, la separación de estos se realizó por medio de cromatografía líquida al vacío (VLC), cromatografía de capa fina (TLC); se realizaron estudios biodirigidos de dichos extractos y de las fracciones obtenidas contra insectos Myzus persicae, Rhopalosiphum padi, Spodoptera littoralis. El extracto metanólico de hoja presento un menor índice de asentamiento de M. persicae, menor índice de asentamiento y efecto antialimentario de R. padi, los extractos crudos no presentaron actividad antialimentaria contra S. littoralis. Las fracciones 9 y 13 (VLC) produjeron efecto antialimentario contra M. persicae, la fracción 7 (VLC) produjo efecto antialimentario y menor índice de asentamiento de M. persicae.
PEMBERDAYAAN IBU-IBU PKK RANCABUNGUR MELALUI KETERAMPILAN DAN MANAJEMEN KEUANGAN USAHA CRAFT DECOUPAGE
Authors: Aini Nur , Asma Nur
Published: November 2020

One of the efforts to increase family income is to increase creativity based on creativeindustries, such as making decoupage skills. This activity was held in RancabungurVillage, Rancabungur District, Bogor Regency. The PKM partners, namely the PKK RT09 RW 05 women consisting of 25 participants. The purpose of this PKM activity is toteach the villagers with craft decoupage skills followed by business financialmanagement. Our activity also aims to empower mothers to make decoupage fromtissues to improve the family's economy and understand business financialmanagement. The response of partners to this activity, all expressed interest. Afterobtaining the material skills and financial management of the craft decoupagebusiness, the partners intend to practice it into one of the activities that generatesfamily income, agreeing to 16 respondents (88.9%); disagree 0; neutral 2 respondents(11.1%). Partners interested in collaborating with business groups related to craftdecoupage, both as material suppliers, craft decoupage craftsmen, or marketers ofcraft decoupage products, agree as much as 15 respondents (83.3%); disagree 0; neutral3 respondents (16.7%). This activity will provide solutions to problems that develop inthe community which can ultimately increase community income
Enhancement in Visualization of Parallel Coordinates using Curves
Authors: Kachhway Inder Singh
Published: November 2020

In this paper I analysis about the visualization techniques of large set of data with parallel coordinates. Parallel Coordinate is an interesting method which can be widely used throughout the world, not only at research area but also other field such as business, market, finance and so on. The aim of this research work is to implement Parallel Coordinate and refinements to Parallel Coordinates using curve. In parallel coordinates visualization of data set is performed by using straight lines. Then lines replaced with the collection of smooth curves across the attribute axis, allowing individual data element to be traced under certain limitations normally impossible due to “Crossing Problem” .Then the notion of spreading out points on axis with few discrete value is introduced, which leads to a simple filter technique when the user selects value on such axis. In this paper I proposed a new concept of visualization of large set of data with parallel Coordinate. Parallel coordinates were proposed by Alfred Inselberg as a new way to represent multidimensional information. A parallel coordinate’s visualization assigns one vertical axis to each variable, and evenly spaces these axes horizontally. This is in contrast to the traditional Cartesian coordinates system where all axes are mutually perpendicular. By drawing the axes parallel to one another, one can represent data in much greater than three dimensions. Each variable is plotted on its own axis, and the values of the variables on adjacent axes are connected by straight lines. Thus, a point in an n-dimensional space becomes a polygonal line laid out across the n parallel axes with n-1 line segments connecting the n data values. In this way, the search for relations among the variables is transformed into a 2-D pattern recognition problem, and the variables become amenable to visualization.
Connected Component Algorithm for Gestures Recognition
Authors: Chhabria Sharda. A. , Shende Ranjana S.
Published: November 2020

This paper presents head and hand gestures recognition system for Human Computer Interaction (HCI). Head and Hand gestures are an important modality for human computer interaction. Vision based recognition system can give computers the capability of understanding and responding to the hand and head gestures. The aim of this paper is the proposal of real time vision system for its application within a multimedia interaction environment. This recognition system consists of four modules, i.e. capturing the image, image extraction, pattern matching and command determination. If hand and head gestures are shown in front of the camera, hardware will perform respective action. Gestures are matched with the stored database of gestures using pattern matching. Corresponding to matched gesture, the hardware is moved in left, right, forward and backward directions. An algorithm for optimizing connected component in gesture recognition is proposed, which makes use of segmentation in two images. Connected component algorithm scans an image and group its pixels into component based on pixel connectivity i.e. all pixels in connected component share similar pixel intensity values and are in some way connected with each other. Once all groups have been determined, each pixel is labeled with a color according to component it was assigned to.
Chapter10: Jackson’s Story. Doing Humour in Japanese
Authors: de Laat Jackson
Published: November 2020

Jackson, in Chapter 10, reminds us to have fun with language and to take on board local humour to connect with others. His story is linked the theme of identity, because being funny is part of his character and growing that persona in Japanese is personally important. In Sensei’s Tips we discuss language play and humour as a means to language learning and to understanding and enjoying culture.
Chapter 12: Navarone’s Story. Talking About Me…
Authors: Feekery Navarone
Published: November 2020

Navarone, in Chapter 12, speaks of the invisibility of language, content and role models in the Japanese curriculum to guide learners in expressing a homosexual identity. He describes how he independently found the language he needed and the social groups he related to online. In Sensei’s Tips we concur on the limited identities represented in learning resources and endorse Navarone’s proactive approach to researching the language to talk about homosexuality and interact using that language.
Chapter 13: Moeko’s Story. Having Mixed Heritage
Authors: Reilly Moeko
Published: November 2020

Moeko in Chapter 13 tells us of her experience of using both English and Japanese at home with her parents who came from Canada and Japan. She later studied Japanese in a school for heritage learners and then at universities in Australia and Japan. In Sensei’s Tips we set out the diversity of language skills and social experiences of children of Japanese heritage and give some pointers on how to benefit from Japanese as a Foreign Language (JFL) classes.
Chapter 4: Mitchell’s Story. From Learner to Language Professional
Authors: Curtis Mitchell
Published: November 2020

In Chapter 4, Mitchell tells how his out-of-class use of various media helped to sustain his interest in Japanese from the elementary level. He describes his current focus on increasing his vocabulary as he prepares for a career as a professional interpreter/translator. We further elaborate on the theme of vocabulary learning in Sensei’s Tips and consider the questions of how much vocabulary we should aim at, which ones we should learn and what it means to know a word.
Chapter 7: Claudette’s Story. Intermediate Blues
Authors: Chan Oi Yee Claudette
Published: November 2020

Claudette’s story in Chapter 7 talks about her learning of Japanese as her third language and the challenges of making progress while working as a busy teacher in Japan. We explore the situation of intermediate level learners in Sensei’s Tips and look at ways to keep improving when progress is less apparent than at the elementary level.
Chapter 9: William’s Story. All is Not Lost
Authors: Bishop William
Published: November 2020

​William had a 45-year break after learning Japanese at university for a couple of years. In Chapter 9, he recalls his first studies of Japanese and what he remembered when he restarted. The question of how much language stays with us when we take a break and how much is lost, is the topic of Sensei’s Tips. The conclusion is rather encouraging in the light of the considerable effort and resources that learners invest in their learning.
Turkey’s Assistance to Iraq after 2014: Key Determinants and Components
Authors: Aliyeva A. I.
Published: November 2020

In the 2010s amid the destabilization of the region and the outbreak of new armed conﬂicts the inﬂuence of the Republic of Turkey in the Arab world has signiﬁcantly increased. The proclamation of the Islamic State in the neighbouring countries in the sphere of Turkey’s interest — Syria and Iraq — became a kind of watershed. And whereas Ankara’s strategy in Syria has received substantial attention of researchers, its policy towards Iraq which included both military and non-military measures remains understudied. The paper aims to uncover the logic behind Turkey’s assistance to Iraq to counter territorial expansion of the Islamic State and to remedy the negative impact of its presence. The paper is divided into two sections. The ﬁrst section focuses on the military-political interaction between the Republic of Turkey and Iraq after 2014. The second examines speciﬁcs of the Turkish non-military assistance to its neighbour. The author stresses that Ankara’s military support to Baghdad in the ﬁght against ‘ISIS’ included expansion of the Turkish troops’ presence in Iraq and escalation of tensions with the Kurdistan Workers’ Party. That has, in turn, led to the growing tension between Turkey and Iraq. As for the civilian assistance, Turkey has focused on its humanitarian dimension implementing relatively small projects — mainly in the areas populated by the Iraqi Turkomans. After declaring victory over the Islamic State, Ankara did not rush to increase the level of its grant assistance that remained relatively low. At the same time Turkey sought to create, particularly through tied loans, advantageous conditions to attract Turkish construction companies to the reconstruction of destroyed infrastructure in Iraq. Thus, the paper shows that during this internationalized internal conﬂict, as well as after its formal end, Turkey has tended to prioritize its national interests, aiming to strengthen its strategic and economic presence in the neighbouring country through a combination of military and non-military measures. However, a recent destabilization of the situation in Iraq poses new challenges to the Ankara’s strategy towards Iraq and highlights the need for further monitoring of the development of Turkish-Iraqi relations.