bluuebunny/crossref_metadata_2025 huggingface dataset:
Undermined (Hegemonic) masculinity and subjective reconstruction within prostitution
Authors: Ranea Triviño Beatriz
Published: May 2019

In this article, we analyze how prostitution has been resignified as a scenario of subjective reconstruction for men in a social context of changes. Prostitution is analyzed from a gender and feminist perspective, taking into account how gender inequality makes possible prostitution and how gender inequality is reproduced within prostitution. Also we analyze the construction of the masculinity arguing that masculinity is supported by some bases: identity linked to work and family provider; to the authority of the paterfamilias; to the exercise of violence or the threat of using it; to sexual activity (following androcentric and patriarchal patterns). It is argued that some of these bases have failure and others (violence and sexual activity) have strengthened and prostitution appears at the crossroads between violence and patriarchal sexuality.
The Role of the Trade Union within the Framework of Company Restructuring Processes
Authors: Terradillos Ormaetxea Edurne
Published: May 2019

The aim of this study is to make a specific proposal regarding the capacity of trade unions to represent the interests of all workers in company restructuring operations. We will particularly refer to the case of companies that do not have workers’ representatives; when a restructuring is going to happen in a company, the Spanish Law requires a period of bargaining; and it is difficult to share that workers, in an individual point of view, can bargain in name of other workers; even if he/she has been elected for this occasion. The method used in this work is focussed in a comparison between the rules trade unions have to negotiate and the treatment of trade unions as representatives of workers in the field of the conflict and the strike.
Comparison of Treatment Response and Survival Profiles Between Drug-Eluting Bead Transarterial Chemoembolization and Conventional Transarterial Chemoembolization in Chinese Hepatocellular Carcinoma Patients: A Prospective Cohort Study
Authors: Wen Ping , Chen Sheng-Duo , Wang Jia-Rui , Zeng Ying-He
Published: May 2019

This study evaluated the difference in treatment response and survival profiles between drug-eluting bead transarterial chemoembolization (DEB-TACE) and conventional transarterial chemoembolization (cTACE) treatments in Chinese hepatocellular carcinoma (HCC) patients. A total of 120
HCC patients were consecutively enrolled in this prospective cohort study, which showed that DEB-TACE achieved higher complete response (CR) (30.8%) compared with cTACE (7.4%) with no difference in overall response rate (ORR) for patients treated with DEB-TACE and cTACE (80.8% vs. 73.5%).
In addition, DEB-TACE was associated with a lower rate of progressive disease (PD) compared with cTACE (1.9% vs. 11.8%). With respect to survival, patients in the DEB-TACE group achieved median progression-free survival (PFS) of 15 months (95% CI 12‐18 months), which was longer than
the cTACE group [median PFS 11 months (95% CI 10‐12 months)]. Median overall survival (OS) was also longer with DEB-TACE [25 months (95% CI 22-28 months)] when compared with cTACE [21 months (95% CI 18‐24 months)]. Univariate and multivariate logistic regression analysis showed
that DEB-TACE was an independent predictive factor for achieving CR. Univariate Cox’s regression analysis revealed that DEB-TACE was a predictive factor for prolonged PFS and OS, while multivariate analysis demonstrated that DEB-TACE was not an independent factor for predicting PFS or
OS. In conclusion, we found that DEB-TACE achieved higher treatment response and prolonged survival compared with cTACE in Chinese HCC patients.
The The Effect of Mesenchymal Stem Cell Wharton's Jelly on ADAMTS-4 and iNOS Levels in Osteoarthritis Rat Model
Authors: Endrinaldi Endrinaldi , Darwin Eryati , Zubir Nasrul , Revilla Gusti
Published: May 2019

BACKGROUND: Osteoarthritis (OA) is one of the most common diseases among the elderly. OA occurs due to an imbalance between degradation and synthesis in articular joint tissue, causing changes in joint components such as cells, matrices and molecular production. Therefore, knowledge of cartilage-degrading enzymes such as ADAMTS-4 and iNOS is needed.
AIM: This study aims to prove the effect of Mesenchymal Stem Cell Wharton Jelly on decreasing ADAMTS-4 levels as cartilage-degrading enzymes and increasing levels of iNOS which showed the immunosuppressive potential of MSC-WJ in cases of osteoarthritis in vivo.
MATERIAL AND METHODS: This research is an experimental study with the design of Post-test-Only Control Group Design. The sample consisted of 16 OA rats as a control group and 16 OA rats treated with MSC-WJ as a treatment group. OA induction is done by injection of monosodium iodoacetate (MIA) into the intra-articular right knee. Giving MSC-WJ is done in the third week after MIA induction. The serum ADAMTS-4 and iNOS levels were measured after 3 weeks treated with MSC-WJ using the ELISA method. The statistical test used is an independent t-test. The value of p < 0.05 was said to be statistically significant.
RESULT: The result showed that serum ADAMTS-4 levels were lower in the group treated with MSC-WJ than in the control group, but not statistically significant (p > 0.05). Serum iNOS levels were higher in the group treated with MSC-WJ than in the control group (p < 0.05).
CONCLUSION: This study concluded that MSC-WJ significantly reduced ADAMTS-4 levels and increased the serum iNOS levels of OA rats.
Clinical Behaviour and Marginal Sealing of Bulk-Fill Resin Composite Restorations Using Light Amplified High-Intensity LEDs Curing: A Randomized Controlled Clinical Trial
Authors: Fahim Shereen Essameldin , Mostafa Mostafa Abdelhamid , Abi-Elhassan Mohsen Hussein , Taher HebatAllah Mohamed
Published: May 2019

BACKGROUND: Delivering sufficient intensity output of curing lights is mandatory to ensure optimum cure and clinical success of bulk-fill resin composite restorations and to avoid undesirable clinical outcomes.
AIM: To evaluate the effectiveness of using light amplified high intensity LED curing on the clinical performance and marginal sealing of posterior bulk-fill resin composite restorations.
MATERIAL AND METHODS: This study was designed as a randomised, controlled, double-blind, Unicenter, parallel, two arms, superiority trial with 1:1 allocation ratio. Adult patients who required posterior tooth-coloured restorations were asked to participate in this trial. All participants signed written informed consent after being completely aware of the settings of the study. The participants who fulfilled the eligibility criteria were divided into two groups according to the type of light curing mode used. Adhesive compound proximal cavities were prepared. All restorative materials were applied according to the respective manufacturer’s instructions. Assessments of the restorations were done at baseline (one week after placement of the restoration), after 6 months and after 12 months using the modified US Public Health Service (USPHS) criteria. For quantitative assessment of the marginal sealing, resin replicas were analysed using scanning electron microscopy. Statistical analysis was done using Chi-square, Mann Whitney, independent t-test and dependent t-tests.
RESULTS: There were no statistical differences between the two groups for the tested clinical parameters along the study periods. For marginal analysis, there were no statistical differences between the intervention and control group at baseline and six months (p-value = 0.347 and 0.516) respectively. At 12 months the control group showed statistically significant higher percentages (p-value = 0.031).
CONCLUSION: Light amplified high-intensity curing units have clinical performance comparable with the conventional LED.
A Study of Noise Pollution Measurements and Possible Effects on Public Health in Ota Metropolis, Nigeria
Authors: Oguntunde Pelumi E. , Okagbue Hilary I. , Oguntunde Omoleye A. , Odetunmibi Oluwole A.
Published: May 2019

BACKGROUND: Noise pollution has become a major environmental problem leading to nuisances and health issues.
AIM: This paper aims to study and analyse the noise pollution levels in major areas in Ota metropolis. A probability model which is capable of predicting the noise pollution level is also determined.
METHODS: Datasets on the noise pollution level in 41 locations across Ota metropolis were used in this research. The datasets were collected thrice per day; morning, afternoon and evening. Descriptive statistics were performed, and analysis of variance was also conducted using Minitab version 17.0 software. Easy fit software was however used to select the appropriate probability model that would best describe the dataset.
RESULTS: The noise levels are way far from the WHO recommendations. Also, there is no significant difference in the effects of the noise pollution level for all the times of the day considered. The log-logistic distribution provides the best fit to the dataset based on the Kolmogorov Smirnov goodness of fit test.
CONCLUSION: The fitted probability model can help in the prediction of noise pollution and act as a yardstick in the reduction of noise pollution, thereby improving the public health of the populace.
The Role of Presepsin in Patients with Acute Surgical Diseases
Authors: Mugazov Miras , Turgunov Yermek , Kaliyeva Dinar , Matyushko Dmitriy , Koishibayev Zhandos , Omertayeva Dinara , Nurbekov Aidyn , Koishibayeva Leyla , Alibekov Asylkhan
Published: May 2019

AIM: The purpose of this study was to determine the level of significance of markers in the development of intra-abdominal hypertension in patients with acute surgical diseases of the abdominal cavity.
METHODS: The authors surveyed 100 patients who were monitored at the Regional Clinical Hospital, Karaganda. The criterion for inclusion in the study was the informed consent of patients to participate in the study, the presence of acute surgical pathology, and the monitoring of intra-abdominal pressure over time. The exclusion criteria for patients from the study is the presence of sub and decompensation of associated diseases: trauma (hematoma of the bladder), bladder tumour and impaired integrity of the pelvic ring. The design of the study was by the legislation of the Republic of Kazakhstan, international ethical norms and normative documents of research organizations, approved by the ethics committee of the Karaganda State Medical University.
RESULTS: According to the world scientific literature, there are 4 indicators that change their value in response to increases in pressure in the abdominal cavity: fibrinogen and prothrombin index (the main indicators of the coagulogram); marker of blood clots D-dimer; early marker of translocation of bacterial flora into the bloodstream sCD14 (presepsin).
CONCLUSION: The authors concluded that the obtained data indicate that an increase in intra-abdominal pressure in acute surgical diseases of the abdominal cavity causes hypercoagulation and an increase in presepsin. Monitoring IAP with simultaneous measurement of the level of presepsin significantly improves the stratification of critical patients in need of emergency surgery.
The Relationship between Hypertension and Cognitive Function Impairment in the Elderly
Authors: Anto Endy Juli , Siagian Laura Oktavina , Siahaan Jekson Martiar , Silitonga Hendrika Andriana , Nugraha Sony Eka
Published: May 2019

BACKGROUND: Hypertension is still a health problem both in developed and developing countries. Hypertension can cause various complications; one of them is cognitive function impairment.
AIM: This study aimed to look at the relationship of hypertension with cognitive function. This research can also be useful to help optimise the health of the elderly, maximise quality of life and avoid hypertension as a risk factor for cognitive impairment in the elderly at the Karya Kasih Nursing Homes, Medan from May to June 2018.
METHODS: This research was carried out by analytic observational with cross-sectional research approach. In this study, 57 elderly from Karya Kasih Nursing Homes Medan who met the inclusion and exclusion criteria participated. Assessment of cognitive function used Mini-Mental State Examination (MMSE), Six Item Cognitive Impairment Test (6CIT) and Abbreviated Mental Test Score (AMT) instruments.
RESULT: This study obtained a significant relationship between the history of hypertension with impaired cognitive function (p = 0.003). The results of the cognitive function examination with MMSE showed that among 57 elderly, 16 people (43.2%) were normal and 21 people (56.8%) had impaired cognitive function in the first degree hypertension group, besides that, 3 people were normal (15%) and 7 people (85%) had impaired cognitive function in the second degree hypertension group (p = 0.031). Based on the result of mild and severe cognitive function impairment, among 12 people (57.1%) and 9 people (42.9%) had a mild and severe cognitive function impairment, respectively, in first-degree hypertension. 3 people (17.6%) and 14 people (82.4%) had a mild and severe cognitive function impairment, respectively, in the second-degree hypertension (p = 0.013). The 6-CIT instrument also showed a significant relationship between the severity of hypertension and impaired cognitive function (p = 0.027), and there was no significant relationship with AMT instruments (p = 0.078).
CONCLUSION: There was a relationship between the history or duration and degree of hypertension with cognitive dysfunction in the elderly at the Karya Kasih Nursing Home Medan.
The Difference of Serum Gastrin-17 Level Based on Gastritis Severity and Helicobacter Pylori Infection
Authors: Parhusip Dumawan Harris , Siregar Gontar Alamsyah , Dairi Leonardo Basa
Published: May 2019

BACKGROUND: Gastritis was defined as the histological presence of gastric mucosal inflammation. One of the most common aetiology was H. pylori. Gastrin-17 was a hormone that was secreted by G cells. H. pylori infection induced increased in gastrin-17 in gastritis. Therefore, this study was to investigate the relationship of gastrin-17 with gastritis severity and H. pylori infection.
AIM: To determine the difference in serum Gastrin-17 level based on gastritis severity and H. pylori infection.
METHODS: A cross-sectional study enrolling 45 patients with gastritis was conducted in Haji Adam Malik General Hospital between April and July 2018. Endoscopy and biopsy examinations were performed to confirm the diagnosis of gastritis. Gastritis severity was assessed using the Updated Sydney System. The presence of H. pylori infection was detected by a Campylobacter-like organism (CLO) examination. Gastrin-17 level and demographic data were also gathered. The analysis was done using Mann Whitney and Kruskal-Wallis test. P-value of < 0.05 was considered statistically significant.
RESULTS: Serum Gastrin-17 level was significantly different based on gastritis severity (P = 0.001 according to neutrophils infiltration and P = 0.023 according to degree of atrophy), H. pylori infection (P = 0.038), and combined gastritis severity and H. pylori infection (P < 0.001). Serum Gastrin-17 level was higher in subjects with severe neutrophils infiltration, without atrophy, and with H. pylori infection.
CONCLUSION: There was a significant difference in serum Gastrin-17 level based on gastritis severity and H. pylori infection.
A new character-level encryption algorithm: How to implement cryptography in an ICT classroom
Authors: Arboledas David
Published: May 2019

Students who are studying their last year at High School face the problem of deciding their professional future. It is evident that the society in which we live will demand more and more qualified and specialized positions in the different branches of engineering.The aim of this paper is to explain how we solved a real problem - ensuring the confidentiality of information - with the knowledge acquired by students during their two years studying information and communication technologies (ICT).Three brilliant students were voluntarily provided with the mentoring service in which the algorithm was designed. As a result, we could design a symmetrical character-level encryption algorithm in the classroom as a final project that we named Azrael.Unfortunately, we did not have any scholarships or funding to do the extra work we had to do, only the personal satisfaction of seeing how the different skills were successfully applied to solve a real problem.
The role of self-learning in promotion of skills in small employee medium sized of Russian enterprises
Authors: Lapteva Svetlana V. , V. Kozlov Anatoly , S. Tamer Olga
Published: May 2019

This investigation seeks to study the role of self-learning educations in promotion of professional competences employee skills of small employee medium sized enterprises. For this purpose, by providing a 15-question researcher-made questionnaire about the quality employee manner of self-learning educations, the exit poll was accomplished from the small employee medium sized enterprises of Russia so that the main question of this research was answered. This research in the domain of applicable researches is from the field type employee the methodology is descriptive from survey type. The statistical population of this investigation is formed from all employees of small employee medium sized enterprises in 19 regions of Russia that were doing their duties in the educational year of 2016-2017. The sample size of employees with regard to the Krejcie-Morgan's table was considered about 450 employees. In this investigation, in order to determine the reliability of questionnaire with emphasis on internal homogeneity, Cronbach's Alpha has been used that Alpha's coefficient was gained equal to 0.933 which is relatively high employee expresses high validity of the researcher-made questionnaire employee this researcher-made questionnaire has the content validity. Also, analysis of findings through Pearson correlation test showed that there is significant relation between the self-learning education courses employee professional skills of employees with confidence of 99% (P<0.01) employee about 60% of total variance of scores of professional skills of employees is arising from variance of scores of self-learning education courses (in other words, about 60% have common variance).
Methodological approach as a strategy for professional employees’ training in small and medium sized enterprises in Russia
Authors: L. Ivanova Natalia , V. Ippolitova Natalia , N. Odarich Irina
Published: May 2019

In the era of rapid development and the emergence of new methods and ideas for the employees’ training in small and medium sized enterprises in Russia, managers need to think about the role that the methodological organization of the educational process, which refers, not only with respect to vocational training, but also in providing the methodological foundation for teaching certain disciplines in small and medium sized enterprises in Russia. The article describes the integrative-praxicological approach in the professional training of employees, it describes the principles and requirements as a methodological basis for the educational process.
Influence of Cementitious Capillary Crystalline Waterproofing Material on the Water Impermeability and Microstructure of Concrete
Authors: Zhang Yi Teng , Zuo Lian , Yang Jin Chao , Zhao Wei Xia , Zeng Xiang Xiong
Published: May 2019

The main objective of this study is to investigate the effect of cementitious capillary crystalline waterproofing (CCCW) material on the water impermeability and microstructure of concrete. The water impermeability of concrete covered with or without CCCW material was tested according to the Chinese standard GB 18445-2012. The results indicate that concretes coated with CCCW material showed much higher water impermeability than blank ones, and the ratio of water impermeability pressure between them reached 275. The samples obtained in various depths of hardened cement paste specimens with or without CCCW coating were analyzed through scanning electron microscopy (SEM) and thermogravimetry-differential scanning calorimetry (TG-DSC), to study the differences in microstructure and hydration products. The results present that after a 28-day standard curing, there were lots of ettringite crystals and CaCO3 formed in the paste in 1 cm from the coating, but the action depth of the CCCW coating could not reach 3 cm. The ettringite and CaCO3 is precipitated in the pore structure of cement matrix and ﬁlling the voids, which leads to the signiﬁcant enhancement in water impermeability.
Monitoring of Multidirectional and Cure-Induced Strain in CFRP Laminates Using FBG Sensors
Authors: Jiang Cheng Biao , Zhan Li Hua , Yang Xiao Bo , Chen Xiao Ping , Lin Zi Jun , Guan Cheng Long
Published: May 2019

During the curing cycle, the residual stress has influence on cure-induced deformation for carbon fiber reinforced plastics (CFRP) laminates, which is highly susceptible to the ply design. Therefore, the change laws of strain and the effect of residual stress in CFRP laminates after curing, which is of great significance to ply design, were cleared by using the combining pattern of thermocouple and fibre Bragg grating (FBG) sensors. For the FBG sensors embedded with different directions in lay-up CFRP laminates, the temperature and strain in different directions of composite laminates were obtained in real-time. Monitoring results show that compared with strain in 45° direction, the carbon fibers (CF) act stronger to inhibit strain in 0° direction and weaker to inhibit strain in 90° direction of resin. After curing, the residual strain in 0° direction is tensile strain, and the residual strain in 45° direction and 90° direction are compressive strain. Meanwhile the value of residual strain in 90° direction is greater than that in 45° direction.
Crash Analysis of UAV Hybrid Composite Fuselage Structure under Different Impact Conditions
Authors: Zahran Mohamed , Abdelwahab Mostafa
Published: May 2019

Due to the rapid scientific and technological developments in the aerospace industry, the requirement for safety and energy absorption efficiency is increasing, and in order to achieve that target, the analyzing of the sudden crash is required to know how to reduce it. Therefore, the main objective of the present work is to analyze the crashing response of the hybrid composite fuselage structure during different impact landing conditions. Moreover, extract the maximum acceleration at the most important locations in the UAV fuselage where most of the critical system is installed. The explicit non-linear finite element software LS-DYNA/WORKBENCH ANSYS is chosen to simulate the crushing of the referenced and the proposed UAV fuselage and investigate the maximum crushing accelerations responses on the payload under different landing conditions. The numerical results show that strengthen the fuselage structure using hybrid composite material has a notable effect on the energy absorption, and transferred acceleration on the payload. Moreover, the hybrid composite fuselage structure can reduce the transferred acceleration on the payload up to 39.65% in comparison with the metal fuselage. In addition, to study the crash analysis during sudden accidents is very important, in order to find the way to reduce it, but can’t avoid it. Hence, the UAV payload should be arranged to avoid the maximum acceleration.
The importance of context-dependent learning in negotiation agents
Authors: Kröhling Dan Ezequiel , Chiotti Omar , Martínez Ernesto
Published: May 2019

Automated negotiation between artificial agents is essential to deploy Cognitive Computing and Internet of Things. The behavior of a negotiation agent depends significantly on the influence of environmental conditions or contextual variables, since they affect not only a given agent preferences and strategies, but also those of other agents. Despite this, the existing literature on automated negotiation is scarce about how to properly account for the effect of context-relevant variables in learning and evolving strategies. In this paper, a novel context-driven representation for automated negotiation is introduced. Also, a simple negotiation agent that queries available information from its environment, internally models contextual variables, and learns how to take advantage of this knowledge by playing against himself using reinforcement learning is proposed. Through a set of episodes against other negotiation agents in the existing literature, it is shown using our context-aware agent that it makes no sense to negotiate without taking context-relevant variables into account. Our context-aware negotiation agent has been implemented in the GENIUS environment, and results obtained are significant and quite revealing.
О $2$-транзитивных произведениях трех регулярных групп подстановок конечного поля
Authors: Glukhov Mikhail Mikhailovich
Published: May 2019

Рассматриваются группа $(GF(2^n),\oplus)$ и ее правое регулярное представление $G_n$. Приведены некоторые классы подстановок $h$ поля $GF(2^n)$, для которых множество $(G_n h)^3$ является $2$-транзитивным.
Вероятностные характеристики разностных и линейных соотношений для неоднородной линейной среды
Authors: Malyshev Fedor Mikhailovich
Published: May 2019

Рассматриваются разностные соотношения для операций циклического сдвига, сложения по модулю $2^n$ и покоординатного сложения по модулю $2$ элементов пространства $V_n = GF(2)^n$, $n\geqslant2$, при различных аддитивных операциях, относительно которых вычисляются разности значений и отдельно разности каждого из аргументов.
Seleção de sintagmas nominais na indexação automática
Authors: Nascimento Gustavo Diniz do , Correa Renato Fernandes
Published: May 2019

O uso dos sintagmas nominais como instrumentos de organização da informação vem se mostrando uma alternativa promissora às palavras isoladas na construção dos sistemas de recuperação de informação. Nesse contexto, a indexação automática por sintagmas nominais minimiza alguns problemas encontrados na indexação baseada em palavras isoladas, como, por exemplo, a sinonímia e a polissemia. No entanto, é notório que nem todos os sintagmas nominais que se encontram em um documento são representativos do conteúdo desse documento, o que demonstra a necessidade de se selecionar os sintagmas nominais mais relevantes. Assim, o objetivo deste estudo consiste em sintetizar e classificar critérios de seleção de sintagmas nominais utilizados em metodologias de indexação automática por sintagmas nominais para textos escritos em língua portuguesa. A metodologia da pesquisa tem natureza exploratória, de cunho bibliográfico, e tem como método procedimental a análise de conteúdo. As metodologias de seleção de sintagmas nominais baseiam-se em critérios como: frequência absoluta de ocorrência, frequência normalizada de ocorrência, frequência inversa nos documentos, não ocorrência em lista de sintagmas nominais pouco significativos, na estrutura gramatical e no nível dos sintagmas nominais. Quanto ao escopo dos critérios, predominam em número os baseados em características do sintagma nominal (estrutura gramatical, nível, conteúdo lexical) e quanto a adoção predominam os baseados no conteúdo do documento e no conteúdo do corpus. A principal contribuição deste estudo consiste do panorama dos critérios de seleção de sintagmas nominais relevantes para textos em português.
A Cultura organizacional e o direito à informação
Authors: Gama Merabe Carvalho Ferreira da , Mattos Carlos André Corrêa de , Aguiar Ana Larissa Costa
Published: May 2019

Objetivo: Analisa o acesso à informação pública sob a ótica da cultura organizacional de uma universidade pública, buscando saber se as instituições de ensino, mesmo afeitas à produção e disseminação de informações sistematizadas na forma de conhecimento, revelam uma cultura organizacional diferente quando se trata de informações públicas.Método: A pesquisa de campo, com abordagem quantitativa foi realizada com professores e técnicos do Instituto de Ciências Sociais Aplicadas da Universidade Federal do Pará e revelou os seguintes fatores de influência: Legitimidade da Administração Pública,Resultado: Utilização Indevida da Informação Pública e Perda do controle da informação, em dois grupos: um favorável à política de amplo acesso às informações e outro que se mostrou reticente quanto à divulgação das informações.Conclusões: Embora os entrevistados percebam a política de amplo acesso às informações públicas como um avanço na perspectiva social, ainda persiste na cultura organizacional a perspectiva do segredo e da propriedade da informação pública.
Aspectos da organização do conhecimento segundo alguns parâmetros da obra de Ludwig Wittgenstein
Authors: Maimone Giovana Deliberali , Lima Rodrigo César Castro
Published: May 2019

Objetivo: O filósofo austríaco Ludwig Wittgenstein jamais se ocupou da organização do conhecimento (OC) tal como o fazemos no mundo contemporâneo, no entanto, as noções mais importantes alicerçadas em suas obras (Tractatus e as Investigações Filosóficas) poderiam nos municiar de interessantes hipóteses no sentido de compreender, organizar e esclarecer o conceito de informação que baliza todo o processo de OC. A partir de tais delineamentos, pretende-se demonstrar que os dilemas típicos da organização do conhecimento que se enfrenta na atualidade são consonantes a muitos dos problemas que o filósofo austríaco abordou em suas obras, sendo que o conceito de informação é trabalhado a partir da noção de linguagem. Método: Levantamento bibliográfico para embasamento teórico e fundamentação das argumentações desenvolvidas. Conclusão: No Tractatus, tese maior do referido filósofo, sugere que nossos problemas filosóficos seriam problemas de linguagem – a natureza dos imbróglios filosóficos se daria por conta da formulação de pseudoproposições e a falta de reflexão sobre a natureza lógica da linguagem. Nas Investigações Filosóficas, muda-se o panorama: a proposição não possui um modelo fixo, depende do uso que fazemos dela
Recomendações para a integração de publicações ampliadas em repositórios digitais confiáveis
Authors: Marín Arraiza Paloma , Ventura Amorim Gonçalez Paula Regina , Borsetti Gregorio Vidotti Silvana Aparecida
Published: May 2019

As publicações ampliadas se configuram como objetos digitais compostos e estão adquirindo relevância na pesquisa científica como forma para compartilhar os dados de pesquisa. Após analisar as publicações ampliadas e as abordagens presentes na literatura, descrevem-se as iniciativas atuais para arquivamento em repositórios de objetos de pesquisa. Como ponto principal do trabalho combinam-se os requerimentos gerais para repositórios digitais confiáveis da Research Library Group (RLG) e Online Computer Library Centre (OCLC), as pautas da norma ISO 16363:2012 e os requerimentos para sistemas de informação que trabalhem com publicações ampliadas. Como resultado propõem-se recomendações e formas de execução para a integração de publicações ampliadas em repositórios digitais confiáveis. Estas recomendações podem servir como base para futuros desenvolvedores de repositórios que queiram construir um marco de trabalho confiável para este tipo de publicações.
Information as proof or monument: materiality, institutionality and representation
Authors: Rabello Rodrigo , Rodrigues Georgete Medleg
Published: May 2019

This paper concerns materiality, institutionality and representation modes as aspects comprising information as “proof” or “monument”. It criticizes the power/knowledge relation in practices involving probation contexts in retrieval and storage systems (e.g. the archive), as well as in various knowledge fields. We present the following hypothesis: while the objective or physical dimension of information prioritizes pretensions of representation of reality (emphasis on the probation/authenticity value), the social dimension criticizes pragmatic and symbolic aspects comprised and comprising in discourses about reality (found in the value of monumentality). Our aim is to analyze information as proof or monument from an interdisciplinary perspective, facing various forms of knowledge in Information Science, as well as documental, judiciary, historiographical, archival and diplomatic perspectives, which find in the document their theoretical, methodological, and operational subsidies. We indicate the transformation of materialized “evidence” in an institutionalized “thing” amidst the “proof” assumes: a) subjects with some authority; b) a document bringing together epistemological and political dimensions summarized in their permanent and material (support) condition, and its ephemeral and immaterial (pragmatic and symbolic) condition. As a result, we explore and exemplify epistemological and political implications of representation modes facing the statements: a) “the document, if authentic, leads to the truth”, guiding “information as proof” towards the representation of social reality; and b) “every document is a monument””, guiding the “information as monument” towards legitimizing discourses about reality.
Proposições acerca do Ensino de Empreendedorismo nas Instituições de Ensino Superior Brasileiras: uma Revisão Bibliográfica
Authors: Almeida Lucas Rodrigo Santos de , Cordeiro Eugênia de Paula Benício , Silva Josebede Angélica Guilherme da
Published: May 2019

O objetivo geral do artigo é analisar, a partir da revisão de literatura, as proposições acerca do ensino de empreendedorismo nas IES brasileiras. Quanto aos métodos, o estudo, é: bibliográfico, exploratório e qualitativo. A pesquisa identificou, que para construção de uma educação empreendedora de qualidade é necessária a integração da sociedade (com as IES e as escolas), além dos programas de empreendedorismo focarem no (a): know-how, formação empreendedora, desenvolvimento de habilidades, abertura de negócios, espírito empreendedor, engajamento empresarial, reconhecimento de aptidões, aprendizagem, desenvolvimento pessoal, vivência empresarial, desenvolvimento das disciplinas etc. Conclui-se, portanto, que as disciplinas, cursos e programas de ensino em empreendedorismo, estejam focados no ensino-aprendizagem e no desenvolvimento das aptidões e habilidades dos alunos, em interação com os professores.
Liderança e Cultura: Tradição e Renovação da Pesquisa
Authors: Vilas-Boas Otacílio Torres , Davel Eduardo , Cavazotte Flávia de Souza Costa
Published: May 2019

Liderança e cultura são fenômenos sociais inseparáveis. Não existe liderança sem cultura. A liderança é em si uma expressão cultural e intercultural, que envolve questões e embates relacionados a líderes e seguidores nos mais variados contextos organizacionais, regionais, nacionais e internacionais. No entanto, as pesquisas sobre liderança e cultura ainda são conduzidas de forma segmentada e fragmentada, carecendo de uma sistematização. O objetivo deste artigo é levantar as diferentes vertentes de pesquisa sobre a relação entre liderança e cultura, proporcionando uma visão de conjunto sobre o campo. Em particular, este trabalho ressalta o papel da liderança no contexto da diversidade cultural e da prática cultural como importantes vetores para reflexão e produção de pesquisas futuras. Com isso, são oferecidas novas possibilidades para que os pesquisadores possam pensar e renovar a pesquisa sobre liderança e cultura.
Saturação Teórica em Pesquisas Qualitativas: Relato de uma Experiência de Aplicação em Estudo na Área de Administração
Authors: Falqueto Junia maria zandonade , Hoffmann Valmir Emil , Farias Josivania Silva
Published: May 2019

A transparência e a clareza dos relatórios de pesquisa, destacando a etapa de coleta de dados, são consideradas parâmetros importantes de avaliação do rigor científico em estudos qualitativos. Por essa razão, quanto mais explicitados forem os procedimentos de coleta e análise, mais qualidade poderá ser aferida ao estudo. Um roteiro de saturação teórica empregado na análise dos dados pode colaborar com esse propósito. Este trabalho teve como objetivo relatar uma experiência do uso da técnica de saturação teórica no campo das ciências sociais aplicadas, descrevendo os passos e ressaltando os desafios enfrentados. Foram discutidos e problematizados os seguintes tópicos: categorias de análise, roteiro de pesquisa, critérios para organização da amostra, ponto de saturação, registro e constatação final da saturação teórica. Espera-se, a partir dos resultados alcançados, contribuir para o aprofundamento do conhecimento sobre a técnica, especialmente, entre investigadores qualitativos do campo da Administração.  Além disso, o estudo também contribui com a divulgação de um roteiro empírico para sistematização e tratamento de dados em estudos que optarem pela saturação teórica.
The effect of acyl-CoA synthetase long-chain family member 5 on triglyceride synthesis in bovine preadipocytes
Authors: Yu Xiang , Fang Xibi , Xiao Hang , Zhao Zhihui , Maak Steffen , Wang Mengyan , Yang Runjun
Published: May 2019

Abstract. Acyl-CoA synthetase long-chain family member 5 (ACSL5)
is a member of the acyl coenzyme A (CoA) long-chain synthase families (ACSLs), and it
plays a key role in fatty acid metabolism. In this study, we proved an association
between the ACSL5 gene and triglyceride metabolism at the cellular
level in cattle. pBI-CMV3-ACSL5 and pGPU6/GFP/Neo-ACSL5 plasmids were
constructed and transfected into bovine preadipocytes by electroporation. The expression
level of ACSL5 was detected by real-time quantitative PCR and western blot. The
triglyceride content was detected by a triglyceride kit. The results indicated that the
expression level of ACSL5 mRNA and protein in the
pBI-CMV3-ACSL5-transfected group was significantly increased compared with those
in the control group. Furthermore, the pGPU6/GFP/Neo-ACSL5-transfected group was
significantly decreased compared with those in the control group. A cell triglyceride
test showed that overexpression or silencing of the ACSL5 gene could affect
synthesis of cellular triglycerides. This study investigated the mechanism of ACSL on
bovine fat deposition, and also provides a new candidate gene for meat quality traits in
beef cattle.
An evaluation of global organic aerosol schemes using airborne observations
Authors: Pai Sidhant J. , Heald Colette L. , Pierce Jeffrey R. , Farina Salvatore C. , Marais Eloise A. , Jimenez Jose L. , Campuzano-Jost Pedro , Nault Benjamin A. , Middlebrook Ann M. , Coe Hugh , Shilling John E. , Bahreini Roya , Dingle Justin H. , Vu Kennedy
Published: May 2019

Abstract. Chemical transport models have historically struggled to accurately simulate the magnitude and variability of observed organic aerosol (OA), with previous studies demonstrating that models significantly underestimate observed concentrations in the troposphere. In this study, we explore two different model OA schemes within the standard GEOS-Chem chemical transport model and evaluate the simulations against a suite of 15 globally-distributed airborne campaigns from 2008–2017. These include the ATom, KORUS-AQ, GoAmazon, FRAPPE, SEAC4RS, SENEX, DC3, CalNex, OP3, EUCAARI, ARCTAS and ARCPAC campaigns and provide broad coverage over a diverse set of atmospheric-composition regimes – anthropogenic, biogenic, pyrogenic and remote. The schemes include significant differences in their treatment of the primary and secondary components of OA – a simple scheme that models primary OA (POA) as non-volatile and takes a fixed-yield approach to secondary OA (SOA) formation, and a complex scheme that simulates POA as semi-volatile and uses a more sophisticated volatility basis set approach for non-isoprene SOA, with an explicit aqueous uptake mechanism to model isoprene SOA. Despite these substantial differences, both the simple and complex schemes perform comparably across the aggregate dataset in their ability to capture the observed variability (with an R2 of 0.41 and 0.44 respectively). The simple scheme displays greater skill in minimizing the overall model-bias (with a NMB of 0.04, compared to 0.29 for the complex scheme). Across both schemes, the model skill in reproducing observed OA is superior to previous model evaluations and approaches the fidelity of the sulfate simulation within GEOS-Chem. However, there are significant differences in model performance across different chemical source regimes, classified here into 7 categories. Higher-resolution nested regional simulations indicate that model resolution is an important factor in capturing variability in highly-localized campaigns, while also demonstrating the importance of well-constrained emissions inventories and local meteorology, particularly over Asia. A comparison of the POA loadings from the complex scheme with SOA loadings from the simple scheme (and vice versa) also suggests that a semi-volatile treatment of POA is superior to a non-volatile treatment. While this study identifies factors within the SOA schemes that likely contribute to OA model bias (such as a strong dependency of the bias in the complex scheme on relative humidity and sulfate concentrations), comparisons with the skill of the sulfate aerosol scheme in GEOS-Chem indicate the importance of other drivers of bias such as emissions, transport, and deposition that are exogenous to the OA chemical scheme.
A revisit of parametrization of summer downward longwave radiation over the Tibetan Plateau from high temporal resolution measurements
Authors: Liu Mengqi , Zheng Xiangdong , Zhang Jinqiang , Xia Xiangao
Published: May 2019

Abstract. The Tibetan Plateau (TP) is one of hot spots in the climate research due to its unique geographical location, high altitude, highly sensitive to climate change as well potential effects on climate in East Asia. Downward longwave radiation (DLR), as a key component in the surface energy budget, is of practical implications for many research fields. Several attempts have been made to measure hourly or daily DLR and then model it over the TP. This study uses 1-minute radiation and meteorological measurements at three stations over the TP to parameterize DLR during summer months. Three independent methods are used to discriminate clear-sky observations by making maximal use of collocated measurements of downward shortwave and longwave radiation as well as Lidar backscatter measurements with high temporal resolution. This guarantees a reliable separation of clear-sky and cloudy samples that favors for proper parameterizations of DLR under these two contrast conditions. Clear-sky and cloudy DLR models with original parameters are firstly assessed. These models are then locally calibrated based on 1-minute observations. DLR estimation is notably improved since specific conditions over the TP are accounted for by local calibration, which is indicated by smaller root mean square error (RMSE) and larger coefficient of determination (R2). The best local parametrization can estimate clear-sky DLR with RMSE of 3.8 W⸱m-2. Overestimation of clear-sky DLR by previous study is evident, likely due to potential residue cloud contamination on the clear-sky samples. Cloud base height under overcast conditions is shown to be intimately related to cloudy DLR parameterization, which is considered by this study in the locally calibrated parameterization over the TP for the first time.
Comparison of turbulence measurements by a CSAT3B sonic anemometer and a high-resolution bistatic Doppler lidar
Authors: Mauder Matthias , Eggert Michael , Gutsmuths Christian , Oertel Stefan , Wilhelm Paul , Voelksch Ingo , Wanner Luise , Tambke Jens , Bogoev Ivan
Published: May 2019

Abstract. Accurate measurements of turbulence statistics in the atmosphere are important for eddy-covariance measurements, wind energy research, and the validation of atmospheric numerical models. Sonic anemometers are widely used for these applications. However, these instruments are prone to probe-induced flow distortion effects, and the magnitude of the resulting errors has been debated due to the lack of an absolute reference instrument under field conditions. Here, we present the results of an intercomparison experiment between a CSAT3B sonic anemometer and a high-resolution bistatic Doppler lidar, which is inherently free of any flow-distortion. This novel remote sensing instrument has otherwise very similar spatial and temporal sampling characteristics as the sonic anemometer and hence served as a reference for this comparison. The presented measurements were carried out over flat homogeneous terrain, at a measurement height of 30 m. We provide a comparative statistical analysis of the resulting mean wind velocities, the standard deviations of the vertical wind speed and the friction velocity and investigate the reasons for the observed deviations based on the turbulence spectra and cospectra. Our results show a very good agreement of the mean wind velocity measurements and the standard deviations of the vertical wind speed, with comparabilities of 0.082 and 0.017 m s−1, respectively. Biases for these two quantities were very low, being smaller than 0.01 m s−1, which corresponds to about 1 % in relative terms. Slightly larger differences were observed for friction velocity. Analysis of the corresponding cospectra showed that the CSAT3B underestimates this quantity systematically by about 3 % on average as a result of too steep a drop-off in the inertial sub-range. We also found that an angle-of-attack dependent transducer-shadowing correction does not improve this agreement effectively because it leads to an artificial correlation between the three wind components and therefore severely distorts the shape of the cospectra.
Quarterdiurnal signature in sporadic E occurrence rates and comparison with neutral wind shear
Authors: Jacobi Christoph , Arras Christina , Geißler Christoph , Lilienthal Friederike
Published: May 2019

Abstract. The GPS radio occultation (RO) technique is used to study
sporadic E (Es) layer plasma irregularities of the Earth's ionosphere on a
global scale using GPS signal-to-noise ratio (SNR) profiles from the
COSMIC/FORMOSAT-3 satellite. The maximum deviation from the mean SNR can be
attributed to the height of the Es layer. Es are generally accepted to be
produced by ion convergence due to vertical wind shear in the presence of a
horizontal component of the Earth's magnetic field, while the wind shear is
provided mainly by the solar tides. Here we present analyses of
quarterdiurnal tide (QDT) signatures in Es occurrence rates. From a local
comparison with mesosphere/lower thermosphere wind shear obtained with a
meteor radar at Collm (51.3∘ N, 13.0∘ E), we find that the
phases of the QDT in Es agree well with those of negative vertical shear of
the zonal wind for all seasons except for summer, when the QDT amplitudes are
small. We also compare the global QDT Es signal with numerical model results.
The global distribution of the Es occurrence rates qualitatively agrees with
the modeled zonal wind shears. The results indicate that zonal wind shear is
indeed an important driving mechanism for the QDT seen in Es.