bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigación interdisciplinaria y transdisciplinaria como tendencia emergente de lo sistémico complejo desde el pensamiento crítico
Authors: González Ortiz Daniel Alejandro , Padilla Doria Luis Alfonso , Zúñiga Díaz Nelly María
Published: November 2020

En el presente escrito se hace un recorrido por el conocimiento, cómo este se genera y cómo puede seguir cambiando y enriqueciéndose, es un proceso en continua transformación, por eso es necesario que se hable de la complejidad de todo este sistema cognoscitivo.  El conocimiento es algo que debe servir para el mejoramiento de la sociedad, el bien de todos, pero es tan complejo entender todo, que se requiere mirarlo desde diferentes vistas, por eso la importancia de observarlo desde varias disciplinas, que ayuden y aporten aumentar el conocimiento en pro del beneficio de la humanidad; es así como nace la interdisciplinariedad, para poder ver objetivamente los problemas y poder dar soluciones efectivas a las dificultades que se presenten. También surge la transdisciplinariedad, la cual: “es una forma específica de interdisciplinariedad en la cual, los límites entre y más allá de las disciplinas se trascienden y el conocimiento y las perspectivas desde diferentes disciplinas científicas, así como fuentes no científicas son integradas” (University of Southampton, 2005, Citado por Henao C., 2017, p. 184). Al final del ensayo se hace un análisis del porque las universidades deben buscar modelos propios de enseñanza – aprendizaje basados en grupos interdisciplinarios que conlleven a una transdisciplinariedad en la educación. Como dice Sánchez J.R. (2019, p.82) “hoy en día la transdisciplinariedad se asoma como una alternativa que parece avanzar hacia una verdadera integración del saber humano”.
Actitud y academia en tiempos de pandemia
Authors: Arango Arango Juan Carlos
Published: November 2020

El objetivo principal del estudio fue analizar la posibilidad de ir más allá del trabajo por competencias hacia el desarrollo del pensamiento configuracional y crítico enmarcado en el modelo sociocrítico, en medio de la contingencia sanitaria provocada por la pandemia de la COVID-19. Para ello se basó en un caso específico donde se relaciona el rendimiento académico y las actitudes de 139 estudiantes del grado octavo de la Institución Educativa San José del municipio de Itagüí, del departamento de Antioquia (Colombia). Los resultados obtenidos indican la necesidad de una pedagogía, que aún en medio de las crisis, procuren incentivar en los jóvenes una aprendizaje más significativo y transformador.
Direct observation of the Si(110)-(16×2) surface reconstruction by atomic force microscopy
Authors: Yamamoto Tatsuya , Izumi Ryo , Miki Kazushi , Yamasaki Takahiro , Sugawara Yasuhiro , Li Yan Jun
Published: November 2020

The atomic arrangement of the Si(110)-(16×2) reconstruction was directly observed using noncontact atomic force microscopy (NC-AFM) at 78 K. The pentagonal structure, which is the most important building block of the reconstruction, was concluded to consist of five atoms, while only four or five spots (depending on tip bias) have been reported with scanning tunneling microscopy (STM). Single atoms were determined to exist near step edges between upper and lower terraces, which have not been reported using STM. These findings are key evidence for establishing an atomic model of the Si(110)-(16×2) reconstruction, which indeed has a complex structure.
On the mass spectrometric fragmentations of the bacterial sesterterpenes sestermobaraenes A–C
Authors: Hou Anwei , Dickschat Jeroen S
Published: November 2020

A 13C-labelling was introduced into each individual carbon of the recently discovered sestermobaraenes by the enzymatic conversion of the correspondingly 13C-labelled isoprenyl diphosphate precursors with the sestermobaraene synthase from Streptomyces mobaraensis. The main compounds sestermobaraenes A, B, and C were analysed by gas chromatography–mass spectrometry (GC–MS), allowing for a deep mechanistic investigation of the electron impact mass spectrometry (EIMS) fragmentation reactions of these sesterterpene hydrocarbons.
Open and closed mid-front vowels in Teotitlán del Valle Zapotec
Authors: Uchihara Hiroto , Gutiérrez Ambrocio
Published: November 2020

Teotitlán del Valle Zapotec is spoken in the community of Teotitlán del Valle, in the Central Valley of Oaxaca in the Mexican state of Oaxaca. Teotitlán Zapotec is one of the Central Zapotec languages, which belong to the Zapotecan language family within the Otomanguean language stock. Teotitlán Zapotec has two mid-front vowels. The distribution of these two mid-front vowels is conditioned by the nature of the adjacent consonants and accent and presents challenges to formal analysis due to a number of properties predictive of the distribution: the disjunctive set of consonants conditioning the alternation, the ganging effect of consonant type and syllable structure as triggers, the featural characterization of the process as raising assimilation, and asymmetries between derived and non-derived environments in the observed patterns.
COVID-19 DÖNEMİNDE SANAL SINIFLARDA ÖĞRETMENLERİN KARŞILAŞTIKLARI SINIF YÖNETİMİ SORUNLARI
Authors: ARSLAN Yaser , ŞUMUER Evren
Published: November 2020

Bu araştırmada, COVID-19 pandemisi döneminde öğretmenlerin sanal sınıflardaki derslerde yaşadıkları sınıf yönetimi sorunlarının ortaya konulması amaçlanmıştır. Kesitsel tarama desenindeki araştırmaya çeşitli kademelerde görev yapan 381 öğretmen katılmıştır. Veriler, araştırmacılar tarafından oluşturulan çevrimiçi veri toplama formu aracılığıyla toplanmıştır. Elde edilen verilerin analizinde, kapalı uçlu sorulara ilişkin betimsel istatistikler sunulmuş; açık uçlu soruların analizinde ise nitel veri analizi kullanılmıştır. Araştırma sonucunda, öğretmenlerin en yoğun olarak fiziksel düzen boyutunun donanım, yazılım bileşenleri ve plan-program etkinlikleri boyutunun öğretimin değerlendirilmesi bileşenlerinde sorun yaşadıkları görülmüştür. Öğretmenlerin deneyimledikleri sorunlardan bazıları dış ortam gürültüsü, internet bağlantısı, derse erişim, dijital içerik yetersizliği, etkileşim eksikliği, kısa ders süresi, ses iletimi, gizlilik ve güvenlik ve yazılımın uygun olmayan kullanımı gibi konularda kümelenmiştir. Araştırmanın sonuçları doğrultusunda uygulayıcılara ve araştırmacılara bazı öneriler sunulmuştur.
Kitelepítések az államhatár térségéből
Authors: Fórizs Sándor
Published: November 2020

The author provides an overview of forceful deportation activities by the Hungarian Border Guard in 1948.
AUTOMOBILE COMPONENTS PROCUREMENT USING A DEA-TOPSIS-FMIP APPROACH WITH ALL-UNIT QUANTITY DISCOUNT AND FUZZY FACTORS
Authors: Chen Jiajia , Xu Zeshui , Gou Xunjie , Huang Dongbin , Zhang Jianchuan
Published: November 2020

Components procurement is a crucial process in supply chain management of the automobile industry. The problem is further complicated by imprecise information and discount policies provided by suppliers. This paper aims to develop a computational approach for assisting automobile components procurement with all-unit quantity discount policy and fuzzy factors, from potential suppliers offering different product portfolios. We propose a two-stage approach consisting of a DEA-TOPSIS (data envelopment analysis procedures followed with a technique for order preference by similarity to an ideal solution) approach for screening suppliers, and subsequentially a fuzzy mixed integer programming (FMIP) model with multiple objectives for optimizing order allocations. The DEA-TOPSIS approach integrates suppliers’ comparative performance and diversity performance into an overall index that improves the ranking of potential suppliers, while the FMIP model features a soft time-window in delivery punctuality and an all-unit quantity discount function in cost. By applying it in a case of automobile components procurement, we show that this two-stage approach effectively supports decision makers in yielding procurement plans for various components offered by many potential suppliers. This paper contributes to integrating multi-attribute decision analysis approach in the form of DEA crossevaluation with TOPSIS and FMIP model for supporting components procurement decisions.
A novel insight into the remnants of hygrophilous forests and scrubs of the Po Plain biogeographical transition area (Northern Italy)
Authors: Poldini Livio , Vidali Marisa , Castello Miris , Sburlino Giovanni
Published: November 2020

Hygrophilous forests and scrubs are ecotonal habitats providing essential ecosystem services, especially in human-modified landscapes; nevertheless, they are among the most threatened habitats worldwide. A sound knowledge of waterside woody vegetation provides a valuable basis for interventions of renaturation of waterbodies. This paper focuses on peculiar communities that occur in riparian and swamp areas of the Po Plain, a broad ecotonal area between the Mediterranean and Temperate regions. The study allowed the description of six new associations. Moreover, it provides a detailed picture of Dioscoreo communis-Populetum nigrae (Populetalia albae) and Amorpho fruticosae-Salicetum albae (Salicetalia purpureae), an overview of Salicetum triandrae (Salicetalia purpureae) at the national and European level, and an update of the alliance Dioscoreo-Ulmion minoris, which is better characterized, classified in Populetalia albae and enlarged to include five associations of elm-oak-rich forests of the Po Plain lowlands and the Karst. Dioscoreo-Ulmion includes, besides Lamio orvalae-Ulmetum minoris, also Polygonato-Quercetum roboris and three new associations: Vinco minoris-Ulmetum minoris and Salvio glutinosae-Quercetum roboris from Po Plain rivers and the karstic lakeshore Rhamno catharticae-Ulmetum minoris. The new arrangement of Dioscoreo-Ulmion results from an analysis of Po Plain elm-rich forests including stands so far attributed to the critical alliance Alnion incanae; the presence of Querco-Ulmetum minoris in Italy is discussed. Two new associations are attributed to Prunetalia spinosae: Salici eleagni-Juniperetum communis and Ulmo minoris-Paliuretum spinae-christi. Stands from the Rivers Isonzo and Tagliamento referred to Veratro nigri-Fraxinetum excelsioris and to the new association Carici albae-Fraxinetum excelsioris represent the outermost expressions of the Ostryo-Tilion ravine forests extending towards the High Plain. A Salix alba swamp forest, Galio palustris-Salicetum albae, is reported for the first time in Italy and attributed to Alnetea glutinosae.
Amphipods in estuaries: the sibling species low salinity switch hypothesis
Authors: Wildish David J. , Radulovici Adriana E.
Published: November 2020

A novel low salinity switch hypothesis is proposed to account for the speciation of an obligate estuarine (oligohaline) amphipod, Orchestia aestuarensis, from a closely-related one, Orchestia mediterranea, found in both estuarine and marine conditions (euryhaline). The underlying genetic mechanisms could involve:

1. A dimorphic allele, or linked set of alleles, carried by the euryhaline amphipod which controls the ability to breed in low salinity conditions in estuaries and which is selected for in these conditions, producing the oligohaline amphipod.

2. A genetically-assimilated gene or genes, controlling the ability to breed in low salinity conditions in estuaries, which is/are “switched on” by low salinity conditions.

3. Allopatric speciation from a euryhaline to an oligohaline amphipod species where low salinity conditions is the selective switch.

It is possible that other estuarine, sibling, amphipod pairs have evolved by salinity switching. In the North Atlantic coastal region, this could include: Gammarus tigrinus/G. daiberi and G. salinus/G. zaddachi (Amphipoda, Gammaridae).
Feaella (Tetrafeaella) obscura sp. nov. – a new pseudoscorpion species from the Maldives (Arachnida, Pseudoscorpiones), and an updated identification key to the subgenus Feaella (Tetrafeaella)
Authors: Novák János , Lorenz Michelle , Harms Danilo
Published: November 2020

The Feaellidae Ellingsen, 1906 is a small but ancient family of pseudoscorpions with 20 extant species across the Southern Hemisphere, and fossils from the Lower Cretaceous of Myanmar and the Eocoene of Europe. Here, we describe and illustrate Feaella (Tetrafeaella) obscurasp. nov. as a new species from the Maldives archipelago in the Indian Ocean. This is the first record of Feaella from a young oceanic island and may indicate a potential for long-distance dispersal in this lineage. We also elevate Feaella (T.) capensis nana Beier, 1966 to full species rank as F. (T.) nana Beier, 1966 and provide an identification key to the members of the subgenus Feaella (Tetrafeaella), thereby facilitating the identification of species.
An explicit representation for disappointment aversion and other betweenness preferences
Authors: Cerreia-Vioglio Simone , Dillenberger David , Ortoleva Pietro
Published: November 2020

One of the most well known models of non‐expected utility is Gul's (1991) model of disappointment aversion. This model, however, is defined implicitly, as the solution to a functional equation; its explicit utility representation is unknown, which may limit its applicability. We show that an explicit representation can be easily constructed, using solely the components of the implicit representation. We also provide a more general result: an explicit representation for preferences in the betweenness class that also satisfy negative certainty independence (Dillenberger 2010) or its counterpart. We show how our approach gives a simple way to identify the parameters of the representation behaviorally and to study the consequences of disappointment aversion in a variety of applications.
Psoriatic spondyloarthritis and Sjögren syndrome: a casual association?
Authors: Bruzzese V. , Marrese C. , Scolieri P. , Pepe J.
Published: November 2020

The association between Sjögren syndrome (SS) and psoriatic arthritis (PsA) is rare. Herein, we report a case of SS in a PsA patient with the mutilans variant. A 67-year old woman developed PsA with progressive articular destruction up to the typical deformation of ‘telescoping fingers’ in the distal phalanges. Psoriatic onychopathy presented ten years after the osteolytic damage in the hands. This late appearance led to delayed diagnosis and therapy, and, consequently, worsened the articular destruction. Thereafter, the patient developed a typical SS with clinical symptoms, such as xerophthalmia and xerostomia. This diagnosis was confirmed by positive diagnostic tests, such as Schirmer test, ANA, and anti-SSA/Ro and anti-SSB/La antibodies. A potential association between the two diseases is discussed.
Pedagogy here on the ground: Using lived experience to research and understand our lives with children
Authors: Madjar Andrew
Published: November 2020

In education, it is common to hear that we need to close the gap between research and practice. Less common is a consideration of what it means to close this gap. A lot of policy, research and professional learning assumes that research should inform teacher practice by providing evidence about ‘what works’ for students’ learning. However, there are other important ways that we can understand the relationship between research and practice. In this paper, I discuss one possibility for understanding this relationship by looking at the research of Max van Manen and his work in phenomenological pedagogy. Phenomenology provides a way for teachers to reflect on their practice by prioritising the meaning and significance of lived experience. As I describe, phenomenology is a valuable way for research to inform practice; but its value lies not in being able to tell us ‘what works’, but in its power to do something with us.
INFORMATION SYSTEM USAGE AND RISK MANAGEMENT AMONG ARABLE CROP FARMERS IN KWARA STATE, NIGERIA
Authors: OMOTESHO O A , OLAGHERE I L , DORAMOLA F S , ADENUGA A H
Published: November 2020

Farmers need to be adequately informed in employing economic strategies to tackle risk situations in agriculture. This study sought to examine the risk management coping strategy employed by the farmers, explore determinants of risk management strategies, and to establish the relationship between information systems and risk management strategy employed. Primary data were used from 141 randomly selected farmers. Pre-tested interview schedule was used for data collection. Descriptive statistics, Likert-type scale, Multinomial logistic regression, and Bivariate correlation analysis were used for data analyses. The results revealed that the majority of the farmers were risk averse. Gender of household head, the highest level of education attained, household size, farming experience and membership of association had a significant effect on the choice of coping strategies employed by the farmers.
Correlation results showed that the more access to information the farmers had to the different risks they encountered, the higher the management strategies they were likely to use. The study concludes that there is a significant relationship between information systems and risk management strategies employed. It was recommended that extension agents should be adequately sensitized on the various sources of information systems available to the farmers so that they can, in turn, pass the information to the farmers.
EVALUATE SOME NEW INBRED RICE AND MALE STERILE VARIETIES UNDER DUS AND VCU EXPERIMENTS
Authors: ABOU KHADRAH S H , ABO YOUSSEF M I , HAFEZ E M , REHAN A A
Published: November 2020

The main objective of study is evaluated some new inbred rice and male sterile varieties under Distinct, Uniform and Stability (DUS) and Value of Cultivated and Used (VCU) Experiments. A number of seven rice varieties were used, Sakha 101, Sakha 102, Sakha 104, Giza 177, Giza 178, Giza182 and Egyptian Yasmine; moreover, GZ. 10154 and GZ 8564-Sp 70, as well as EGMS and CMS1 as promising lines to evaluating by DUS and VCU. The data were recorded on morphological and yield characters. The results could be concluded that: regarding to qualitative characteristics (PQ and QL), from 24 PQ and QL characters, the nine rice varieties recorded the same score for 19 characters; moreover, the rice varieties Egyptian jasmine was dissimilar in the score No. 24, 39, and 60, that referred to this variety belong to Indica type while the rice varieties Sakha 101and Giza 178 were similar only in score no.11, which belong to Japonica and Indica japonica types, that meaning these varieties were highly uniform and stability in qualitative characters than the other promising line GZ10154. Regarding to quantities characteristics (QN), from 27 QN characters, 9 rice varieties recorded the same score for 20 characters; moreover, the rice varieties Sakha 101, Sakha 102, Sakha 104, Giza 177, Giza 178, Giza 182, Egyptian yasmine and GZ 8564-Sp70 were similar in the score no. 1, 12, 23, 48, 49 and 50, while the promising line GZ 10154 was dissimilar in these scores during the two seasons, meaning that all these varieties were highly uniform and stability than the other promising, line GZ 10154. These results were conformed to VCU results, where the studied varieties recorded the highest grain yield/day. From these results could be concluded that all the varieties, except GZ 10154, accepted as a new rice release variety, but the promising line GZ 10154 required to more recurrent selection to increase their uniform, as well as CMS line was accepted could be evaluated under different conditions, but EGMS should be evaluated under heat stress conditions.
Control methods for non-smoking nicotine-containing products
Authors: Mirgorodskaya A. G. , Shkidyuk M. V. , Kalashnikov S. V.
Published: November 2020

Non-smoking products for oral consumption are a growing segment of the nicotinecontaining products market and, therefore, the study of the component composition and toxicological load during its consumption is an urgent task. The toxic components of nicotine-containing products are the subject of research in scientific laboratories and are carried out by various methods. Studies have been monitored for potential toxicity determinations of tobacco and non-tobacco smokeless products. The article presents the results of monitoring methods for determining toxic components that determine the risk of nonsmoking products, carried out at the Federal State Budgetary Scientific Institution ARSRCTTP. As a result of the research, methods for the quantitative determination of nicotine content have been determined and the method for the determination of tobacco-specific nitrosamines (TSNA) using high-performance liquid chromatography in the product under study has been validated.
Influence of the composition of composite mixtures with a reduced gluten content on the rheological properties of the dough based on their basis
Authors: Ushakova Ju. V. , Paskova E. M. , Rysmukhambetova G. E. , Kulevatova T. B.
Published: November 2020

The article presents experimental data on the assessment of the rheological properties of dough from new types of flour, formed on the basis of cumulative curves using the Mixolab device. The data of mixolabograms and radial diagrams (Mixolab profiler) made it possible to reveal the existing differences in the parameters of the rheological profile and Mixolab indices. The object of the study is composite mixtures of gluten-free flours: No. 1 is 50% of pumpkin and 50% of corn flour, No. 2 is 50% of linseed and 50% of corn flour, No. 3 – 50% of rice and 50% of corn flour, No. 4 – 75% of linseed and 25% of corn flour, No. 5 is 30% of linseed and 70% of rice flour. The use of composite mixtures is promising due to high oven rise and low starch thickening because of its high water absorption capacity (WAC). In addition, there is certain economic efficiency, since it is possible to produce more dough at a lower cost.
“Cognitive Peer Coaching” - a workplace-based faculty development approach for problem- based learning facilitators: a qualitative study
Authors: Madeeha Rehan  , Rahila Yasmeen  , Admin
Published: November 2020

Abstract

Objective: To explore the factors affecting the learning process of novice PBL facilitators trained through “Cognitive Peer Coaching”.

Method: A qualitative study of phenomenological design was conducted. Total 15 PBL facilitators, five experts and ten novices were selected and were given orientation about cognitive peer coaching through workshops. Novice facilitators were trained by experts through cognitive peer coaching cycle comprising of preobservation, observation and post observation phase following socio-cognitive apprenticeship theory based on modeling, coaching, scaffolding, articulation, reflection and exploration. Two data collection instruments; observation checklist and semi-structured interviews were used. Interviews were audio-recorded, transcribed and subjected to thematic analysis manually. Credibility was ensured by multiple data collection sources comprising of observation notes, reflective journal and audio-recordings of reflections, coaching sessions and interviews.

Results: Total 10 novice PBL facilitators were interviewed. Six themes generated: mental growth spurred from within, conscientization, experiential learning, intrinsic motivation and effective body language and impediment to success. Learning by observation, learning by doing, increased motivation, autonomy, constructive feedback and reflection augmented the facilitation skills. Whereas, unawareness about reflective practices and peer coaching were identified as major obstacles in personal and professional growth of faculty.

Conclusion: “Cognitive peer coaching” is a dynamic, innovative and feasible faculty development approach that contributed to the learning of facilitation skills from psychological, emotional and social perspective. It should be implemented by policy makers as a part of ongoing professional development programme.

Keywords: Cognitive peer coaching, PBL facilitation, faculty development
Medical students’ perceptions of their educational environment in an integrated curriculum in Saudi Arabia
Authors: Tahani Altamimi  , Johnson Alex  , Sara Mattout  , Noha Mitwally  , Sami Alnassar  , Admin
Published: November 2020

Abstract

Objective: Measure medical students’ perceptions of their educational environment (EE) and determine the potential differences in those perceptions in regard to gender and academic year of study.

Methods: A cross-sectional survey was conducted with medical students enrolled at private College of Medicine in Dar Al Uloom University (DAU), Saudi Arabia during 2018-2019. The Dundee Ready Educational Environment Measure (DREEM) English version was completed by 191 of the 262 (73% response rate) students. Total, domain, and item DREEM scores were analysed using descriptive statistics, the t-test, and ANOVA. The ethical approval for the study and participants’ consent were taken.

Results: Participants’ total mean DREEM score (122.49/200) was higher than that of most medical schools in Saudi Arabia. There were gender-related differences for DREEM domains. Perceptions of the EE trended higher for male students and advanced-level students.

Conclusion: This study was needed in order to determine the current EE among medical students at a new private sector college with an integrated system-oriented hybrid curriculum. The overall study results illustrate a healthy EE. Areas for improvement are also noted.

Keywords: Educational environment; Medical Student; Integrated curriculum; Dundee Ready Educational Environment Measure (DREEM)
P.arg102ser is a common Pde6? mutation causing autosomal recessive retinitis pigmentosa in Pakistani families
Authors: Anosha Ali Khan  , Yar Muhammad Waryah  , Muhammad Iqbal  , Hafiz Muhammad Azhar Baig  , Muhammad Rafique  , Ali Muhammad Waryah  , Admin
Published: November 2020

Abstract

Aim: To explore the genetic cause of autosomal recessive retinitis pigmentosa in consanguineous families.

Methods: The multi-centre study was conducted from July 2015 to June 2018 at Liaquat University of Medical and health Sciences, Jamshoro, the University of Sindh, Jamshoro, and Islamia University, Bahawalpur, Pakistan, and comprised families affected with non-syndromic autosomal recessive retinitis pigmentosa. Ophthalmological investigations were done to assess the fundus of the patients and the status of the disease. Pedigrees were drawn and family histories were recorded to find out the mode of inheritance. A 10cc sample of whole blood was obtained from each participant and deoxyribonucleic acid was extracted. Homozygosity mapping was performed using three short tandem repeat polymorphisms closely linked to phosphodiesterase 6A gene, and the linked families were Sanger-sequenced for identification of the mutation. Bioinformatic tools were used to design amplification refractory mutation system assay and to assess the protein structure and pathogenic effects of the mutation.

Results: In the 80 consanguineous families, there were 464 individuals, and, of them, 236(51%) were affected with their age ranging between 4 and 80 years. Family history and pedigree drawings revealed autosomal recessive retinitis pigmentosa with early childhood onset. Linkage analysis indicated the homozygosity in 6(7.5%) families. Sanger-sequencing revealed a common mutation c.304C>A (p.Arg102Ser); segregating with the disease in the linked families.

Conclusion: The findings may offer effective genetic counselling and minimise disease penetration in consanguineous families.

Key Words: PDE6a mutations, Retinitis pigmentosa, Pakistan, ARMS assay.
Frequency of gall bladder carcinoma in cholecystectomies for symptomatic cholelithiasis
Authors: Muhammad Amar Qudeer  , Syed Asghar Naqi  , Muhammad Zeeshan Sarwar  , Hafiza Amina Mujahid  , Admin
Published: November 2020

It was a Letter to the Editor to find out the frequency of carcinoma gall bladder in patients which were presented with symptomatic cholelithiasis. Carcinoma of the gallbladder is a rear malignancy with 5 year survival rate of 5%. Carcinoma gall bladder is the most common billiary tract malignancy, it is also 5th most common in gastrointestinal malignancies 1. In Pakistan the incidence of carcinoma gallbladder among patients having symptomatic cholelithiasis is 6 to 28%2. Patients with symptomatic gall stones had more risk for developing carcinoma gallbladder as compared to asymptomatic gall stones. Large stones in cholelithiasis are more dangerous than small stones as stone size reaches >3cm risk increases upto 10 fold. Gallbladder polyps >10mm, calcified(porcelain) gallbladder, choledochal cyst, seclerosing cholangitis, anomalous pancreaticobillary junctions and exposure to carcinogens are other risk factors3. Continuous...
A koronavírussal kapcsolatos válságkezelés Latin-Amerikában
Authors: Soltész Béla
Published: November 2020

Latin-Amerikában a COVID-19 járvány megjelenését követő nyolc hónapban különböző súlyosságú egészségügyi és gazdasági válságok bontakoztak ki, amelyekre eltérő stratégiák alapján reagáltak az államok vezetői. A legtöbb országban a politikai vezetés komolyan vette a kihívást, és ahol kevésbé, ott is néhány hónap alatt megtörtént a korrekció. A fertőzések és a halálozások száma lakosságarányosan magasnak mondható Brazíliában, Chilében, Panamában és Peruban. A szakpolitikai intézkedések közül a legtöbb országban a gazdaságvédelemre koncentrálók voltak többségben, a munkahelyvédelmi intézkedések helyett azonban gyakoribbak voltak a pénzbeli vagy dologi segélyek. A politikai vezetők és intézmények népszerűsége változatosan alakult, de mindezidáig a bolíviai választás az egyetlen esemény, ahol a koronavírussal kapcsolatos (rossz) válságkezelésnek politikai következménye lett.
A comparative study of Accuracy, Sensitivity, and Specificity
of MR Cholangiopancreatography versus Ultrasonography for
diagnosis of hepatobiliary and pancreatic pathologies
Authors: Sushmita Rao p
Published: November 2020

Background: The diagnosis of abdominal pathologies is a
challenge and radiology is a very important tool in diagnosis.
Various methods are often used for the diagnosis of such
conditions. We in the present study tried to compare the
efficacy of magnetic resonance cholangiopancreatography and
ultrasonography in evaluating biliary duct diseases.
Methods: The present study was conducted in the Department
of Radiodiagnosis, Prathima Institute of Medical Sciences,
Naganur, Karimnagar. All patients presenting with recurrent
pancreatitis, hypochondriac pain, jaundice presenting to the
radiology department are included in the present study.
Patients with metallic implants, claustrophobia are excluded
from the present study. Ultrasonography was performed using
a Philips HD 15 and Philips affinity 70 machine. Both curvilinear
and linear probes were used in the study. Images of the biliary
tree were recorded for later review. MRI-MRCP was performed
on Philips ACHIEVA 1.5 Tesla MRI Scanner.
Results : In this study, n=13 subjects were clinically suspected
to have cholelithiasis (n=7), choledocholithiasis (n=2), and both
Cholelithiasis with choledocholithiasis (n=4). Ultrasonography
was able to diagnose Cholelithiasis correctly in n=5 cases,
choledocholithiasis in n=1 case, Cholelithiasis with
choledocholithiasis in n=4 cases and rule out Cholelithiasis in
n=2 cases, but failed to identify distal CBD calculus in n=1 case
(choledocholithiasis) hence having a diagnostic accuracy of
92.31% for the cholelithiasis-choledocholithiasis group.
Conclusion: MR Cholangiopancreatography is very accurate in
demonstrating calculi at the distal end of CBD as an area of
the signal void, also in demonstrating strictures as the cause
of dilatation of biliary radicals. It showed the length of the
stricture segment very well and differentiated stricture as
malignant and benign.
Indigenous indicators of vitamin B12 deficiency
Authors: P Deepak Kumar , Makwana Darshana , Pragathi Pragathi
Published: November 2020

Introduction: Clinical manifestations of vitamin B12 deficiency
are mostly non-specific. An entity called subclinical deficiency
has become popular where the need has arisen to perform
costly investigations which indicate functional deficiency of
vitamin B12 even when vitamin B12 levels are normal. These
factors pose a challenge in planning management of patients.
Aims and objectives : The study was conducted as an attempt
to identify affordable and credible laboratory indicators of
vitamin B12 deficiency which can be used as screening tests
before choosing patients for further evaluation or treatment.
Material and Methods : This was a time bound cross-sectional
study where 100 adult patients who had undergone the
following investigations were randomly chosen: Complete
Blood Count with red cell indices, serum bilirubin and serum
vitamin B12 levels. The sensitivity, specificity and predictive
values (positive-PPV and negative-NPV) of the variables that
could hypothetically identify vitamin B12 deficiency, both
individually or in combinations were calculated and compared.
Results and conclusion : Hemoglobin, MCV (Mean Corpuscular
Volume), MCH (Mean Corpuscular Hemoglobin), platelets and
bilirubin were not equally distributed between vitamin B12
deficient and normal groups(p values for these variables were
0.029, 0.000, 0.000, 0.003 and 0.029 respectively).When these
variables were tested individually and in combination, the
combination of [MCV=95 fl or MCH=30 pg or Platelets =1.4
lakh/µl or Bilirubin =1 mg/dl] had sensitivity of 68.2%,
specificity of 85.7%, PPV of 78.9% and NPV of 77.4%. This
proposed combination used as a screening test has potential
for wide application considering its simplicity and cost
advantage.
Investigación de Mercado de una Granja de Producción de Huevo Libre de Jaula Establecida en Delicias, Chihuahua
Authors: Magaña Magaña José Eduardo , López Rodríguez Jacqueline , Kiessling Davison Christian Mauricio , Escalera Ochoa Laura , Barrera Torres Julio César
Published: November 2020

En la actualidad, el mercado orgánico de alimentos es uno de los más dinámicos ya que los consumidores se informan de los beneficios que tienen al consumirlos. Se analizó tanto la oferta y la demanda existente de huevo al pastoreo libre en la región de Delicias, Chihuahua. El tamaño de la muestra fue de 108 hogares, fueron entrevistados a través de cuestionarios estructurados y aplicados por sector del municipio. El 95% contestaron que en su hogar se consume huevo. El 84.6% de los cuales,  compraron  a la  semana  presentaciones  de 1  kg.  y el  15.4%  de 2  kg.  Las  variables  para segmentar el mercado meta fueron el precio y el ingreso familiar mensual. El 13.7% de los consumidores de huevo pagaron precios de más de 51 pesos y sus ingresos familiares fueron mayores de 8000 pesos al mes. La demanda potencial fue de 337 434 kg. La empresa actualmente tiene 23000 gallinas leghorn y las granjas familiares en promedio tienen 200 por lo que si tienen la oferta suficiente para atender el mercado.  Se le sugirió a la empresa Distribución cada 3° día en comercios establecidos y franquicias departamentales, publicidad en radio, redes sociales y folletos de los centros comerciales.
Propagación clonal de guayabo en distintos medios de enraizamiento
Authors: De Luna-Jiménez A. , Luna-Ruíz J. J. , Fuántos-Mendoza J. , Martínez de Lara J.
Published: November 2020

Existen registros del cultivo de guayaba en Calvillo desde 1824; actualmente se dedican al cultivo 2500 productores y se cosechan 95 mil toneladas anuales lo que generan una importante derrama económica. Con el objetivo de evaluar el impacto de seis sustratos solos (100%) y mezclados con arena en proporciones iguales (50% y 50%), en el enraizamiento de estacas, en el Centro de Ciencias Agropecuarias de la UAA, se realizó durante 2017-18, la investigación. Las estacas se obtuvieron de árboles elite del Banco de Germoplasma de la UAA, se utilizaron macetas de plástico de 29 cm de alto y 30 cm de ancho, las que se llenaron dejando 3 cm de borde para el riego, las estacas, se impregnaron en la base con el enraizador radix 10,000 ppm y se cubrieron con bolsa plástica para crear una cámara húmeda. Se tuvieron dentro de un invernadero, se colocó sobre el techo una malla media sombra para reducir la luz, se regaron 3 veces por semana. Se registró la temperatura y humedad relativa a las 8:00 am, 12:00 pm y 16:00 pm, durante los meses de junio a octubre, se calculó para cada hora el promedio mensual. A los cinco meses se evaluaron las variables: número total de raíces (NTR), número de raíces por estaca (NRE), porcentaje de estacas enraizadas (%EE) y longitud de la raíz más grande (LR+G cm). Los tratamientos con el mayor NTR, NRE, %EE y LR+G, fueron Fibra de coco (100%) (24.4 raíces, 4.889 raíces por estaca, 98 % y 10.1 cm), aserrín de mezquite + arena (50% + 50%), (24.1 raíces, 4.83 raíces por estaca, 97 %, 2.8 cm) y paja de cereales (100%) (22.8 raíces, 4.56 raíces por estaca, 91%, 7.2 cm).
Wireless Sensor Networks for Indoor Environment Monitoring Using LabVIEW
Authors: Rout Mrutyunjay , Verma Dr. Harish Kumar , Das Subhashree
Published: November 2020

Wireless sensor networks (WSNs) have gained worldwide attention in recent years, particularly with the rapid progress in Micro-Electro-Mechanical Systems (MEMS) technology which has facilitated the development of smart sensors. These sensors are small, with limited processing and computing resources, and they are inexpensive compared to traditional sensors. These sensor nodes can sense, measure, and gather information from the environment and, based on some local decision process, they can transmit the sensed data to the user. WSNs are large networks made of a numerous number of sensor nodes with sensing, computation, and wireless communication capabilities. In present work we provide a brief summary of the state-ofthe- art in wireless sensor networks, investigate the feasibility of indoor environment monitoring using crossbow wireless sensor nodes. Here we used nesC programming language and TinyOS operating system for programming Crossbow sensor nodes and LabVIEW GUI is used for displaying different indoor environmental parameters such as temperature, humidity and light acquired from different Wireless sensor nodes. These sensor readings can help building administrators to monitor the physical conditions of the environment in a building for creating optimized energy usage.
Data Mining Technique to Interpret Lung Nodule for Computer Aided Diagnosis
Authors: Mohanty Aswini Kumar , Lenka Saroj Kumar
Published: November 2020

Diagnostic decision-making in pulmonary medical imaging has been improved by computer-aided diagnosis (CAD) systems, serving as second readers to detect suspicious nodules for diagnosis by a radiologist. Though increasing the accuracy, these CAD systems rarely offer useful descriptions of the suspected nodule or their decision criteria, mainly due to lack of nodule data. In this paper, we present a framework for mapping image features to radiologist-defined diagnostic criteria based on the newly available data). Using data mining, we found promising mappings to clinically relevant, human-interpretable nodule characteristics such as malignancy, margin, spiculation, subtlety, and texture. Bridging the semantic gap between computed image features and radiologist defined diagnostic criteria allows CAD systems to offer not only a second opinion but also decision-support criteria usable by radiologists. Presenting transparent decisions will improve the clinical acceptance of CAD.
A Review on Intelligent Agent Systems
Authors: Sarangi Lokanath , Panda Dr. Chittaranjan
Published: November 2020

Multi-agent system (MAS) is a common way of exploiting the potential power of agent by combining many agents in one system. Each agent in a multivalent system has incomplete information and is in capable of solving entire problem on its own. Multi-agent system offers modularity. If a problem domain is particularly complex, large and contain uncertainty, then the one way to address, it to develop a number of functional specific and modular agent that are specialized at solving various problems individually. It also consists of heterogeneous agents implemented by different tool and techniques. MAS can be defining as loosely coupled network of problem solvers that interact to solve problems that are beyond the individual capabilities or knowledge of each problem solver. These problem solvers, often ailed agent are autonomous and can be heterogeneous in nature. MAS is followed by characteristics, Future application, What to be change, problem solving agent, tools and techniques used, various architecture, multi agent applications and finally future Direction and conclusion. Various Characteristics are limited viewpoint, effectively, decentralized; computation is asynchronous, use of genetic algorithms. It has some drawbacks which must be change to make MAS more effective. In the session of problem solving of MAS, the agent performance measure contains many factors to improve it like formulation of problems, task allocation, organizations. In planning of multivalent this paper cover self-interested multivalent interactions, modeling of other agents, managing communication, effective allocation of limited resources to multiple agents with managing resources. Using of tool, to make the agent more efficient in task that are often used. The architecture o MAS followed by three layers, explore, wander, avoid obstacles respectively. Further different and task decomposition can yield various architecture like BDI (Belief Desire Intension), RETSINA. Various applications of multi agent system exist today, to solve the real-life problems, new systems are being developed two distinct categories and also many others like process control, telecommunication, air traffic control, transportation systems, commercial management, electronic commerce, entertainment applications, medical applications. The future aspect of MAS to solve problems that are too large, to allow interconnection and interoperation of multiple existing legacy systems etc.
Minimization of Harmonics Noise Using Wavelet Transformation Technology
Authors: Dash Mr. Debasis , Satapathy Mr. Shatyaprakasha , Panda Dr. Chittaranjan
Published: November 2020

The field programmable gate array technology can design high performance system at low cost for wavelet analysis. Wavelet transform has gained the reputation of being a very effective signal analysis tool for much practical application. Implementation of transform needs the meeting of real-time processing for most application. The objectives of this paper are to compare the Haar and Daubeches technology and to calculate the bit error rate (BER) between the input audio signal and reconstructed output signal. It is seen that the BER using Daubechies wavelet technology is less than Haar wavelet. The design procedure is explained using the stat of art electronic design. Automation tools for system design on FPGA, simulation, synthesis and implementation on the FPGA technology has been carried out. The power hovmoller, cross wavelet spectra and coherence are described. A Practical step-up-step guide to wavelet analysis is given with examples taken from time series. The guide includes a comparison to the windowed Fourier transform. New statistical significance test for wavelet power spectra are developed by deriving theoretical wavelet spectra for white and red noise. Empirical formula is given for the effect of smoothing on significance levels and filtering. The notion of orthogonal no separable trivet wavelet packets, which is the generation of orthogonal university wavelet packets is introduced. A de-noising method based on wavelet packet shrinkage is developed. The principle of wavelet packet shrinkage for de-noising and the section of thresholds and threshold function are analyzed.
E-Procurement e Contratos inteligentes
Authors: Ito Christian , De Sousa Santos Fábio
Published: November 2020

O artigo investiga a intersecção entre a administração pública digital e os procedimentos de contratação pública. A Hipótese da qual parte a investigação é de que as caraterísticas e os institutos da legislação nacional de compras públicas limitam o das inovações tecnológicas no âmbito da contratação pública brasileira. Trata-se de pesquisa bibliográfica e documental, com a utilização do método indutivo para a inferência das conclusões apontadas. Conclui que as características da legislação de contratação pública brasileira tornam a adoção de soluções tecnológicas mais avançadas dependentes de alterações legislativas e que os contratos inteligentes, na sua forma mais radical e inovadora, são incompatíveis com o regime de cláusulas exorbitantes previstos na legislação.
A Big Data Virtualization Role in Agriculture: A Comprehensive Review
Authors: MATHIVANAN Sandeepkumar , JAYAGOPAL Prabhu
Published: November 2020

Big data is a collection of large volumes of data sets which are more complicated to analyze using standard data processing methods. It also emphasizes parameters like data variety and velocity data. Big data will play a most significant role in our daily life regarding applications like healthcare electronic commerce, agriculture, telecommunication, government, and financial trading. In the agriculture domain, big data is an optimal method to increase the productivity of farming by gathering and processing information like plant growth, farmland monitoring, greenhouse gases monitoring, climate change, soil monitoring and so forth. Virtualization is an emerging technique that can be combined with big data in agriculture. Virtualization has been used extensively in research for a long time, the term “virtual” entities affecting a real-life form. In agriculture, it has many more physical objects, sensors, and devices. This physical object is virtualized and has digital representation to store, communicate and process via the internet. The information from the virtual object has a large volume of data which helps meaningful data analysis or aspects to make application services like decision making, problem notification, and information handling. This paper provides a comprehensive review of big data virtualization in the agriculture domain. The virtualization methodology, and tools used by many researchers is surveyed.
Developing an Electronic Logbook to Monitor Progress for International Doctoral Students in Thailand: A Pilot Study
Authors: VISESKUL Nongkran , NANTSUPAWAT Apiradee , TACHAUDOMDACH Chiraporn , FONGKAEW Warunee , SRITEERAJIT Grid
Published: November 2020

Monitoring the progress of doctoral students is an important contributor to successful graduation within the curriculum timeline. Usage of an electronic logbook is needed to improve the quality and efficiency of education. The objective of this developmental research study was to develop an electronic logbook to monitor the progress of international doctoral students. The steps for creating the electronic logbook are described. Twenty-seven international doctoral students at the Faculty of Nursing of one university in Thailand used the electronic logbook for 3 months and provided feedback to the developers. Quantitative findings reported high to very high levels of satisfaction with the electronic logbook, regarding usefulness, convenience, speed, and ease of access. Qualitative findings also documented the electronic logbook’s strengths and benefits, as well as problems and obstacles. In conclusion, students found the electronic logbook useful and were satisfied with it. Widespread use of this innovative electronic logbook should be used to monitor student study progress.