bluuebunny/crossref_metadata_2025 huggingface dataset:
IP Traceback using Flow Based Classification
Authors: Bhavani Yerram , Janaki Vinjamuri , Sridevi Rangu
Published: April 2019

Background:

Distributed Denial of Service (DDoS) attack is a major threat over the internet. The IP traceback mechanism defends against DDoS attacks by tracing the path traversed by attack packets. The existing traceback techniques proposed till now are found with few short comings. The victim required many number of packets to trace the attack path. The requirement of a large number of packets resulted in more number of combinations and more false positives.

Methods:

To generate a unique value for the IP address of the routers in the attack path Chinese Remainder theorem is applied. This helped in combining the exact parts of the IP address at the victim. We also applied K-Nearest Neighbor (KNN) algorithm to classify the packets depending on their traffic flow, this reduced the number of packets to reconstruct the attack path.

Results:

The proposed approach is compared with the existing approaches and the results demonstrated that the attack graph is effectively constructed with higher precision and lower combination overhead under large scale DDoS attacks. In this approach, packets from diverse flows are separated as per flow information by applying KNN algorithm. Hence, the reconstruction procedure could be applied on each group separately to construct the multiple attack paths. This results in reconstruction of the complete attack graph with fewer combinations and false positive rate.

Conclusion:

In case of DDoS attacks the reconstruction of the attack path plays a major role in revealing IP addresses of the participated routers without false positives and false negatives. Our algorithm FRS enhances the feasibility of information pertaining to even the farthest routers by incorporating a flag condition while marking the packets. The rate of false positives and false negatives are drastically reduced by the application of Chinese Remainder Theorem on the IP addresses of the router. At the victim, the application of KNN algorithm reduced the combination overhead and the computation cost enormously.
Ecological Momentary Assessment Using Smartphones in Patients With Depression: Feasibility Study (Preprint)
Authors: Maatoug Redwan , Peiffer-Smadja Nathan , Delval Guillaume , Brochu Térence , Pitrat Benjamin , Millet Bruno
Published: April 2019

BACKGROUND

Ecological momentary assessment (EMA) is a promising tool in the management of psychiatric disorders and particularly depression. It allows for a real-time evaluation of symptoms and an earlier detection of relapse or treatment efficacy. The generalization of the smartphone in the modern world offers a new, large-scale support for EMA.

OBJECTIVE

The main objective of this study was twofold: (1) to assess patients’ compliance with an EMA smartphone app defined by the number of EMAs completed, and (2) to estimate the external validity of the EMA using a correlation between self-esteem/guilt/mood variables and Hamilton Depression Rating Scale (HDRS) score.

METHODS

Eleven patients at the Pitié-Salpêtrière Hospital, Paris, France, were monitored for 28 days by means of a smartphone app. Every patient enrolled in the study had two types of assessment: (1) three outpatient consultations with a psychiatrist at three different time points (days 1, 15, and 28), and (2) real-time data collection using an EMA smartphone app with a single, fixed notification per day at 3 pm for 28 days. The results of the real-time data collected were reviewed during the three outpatient consultations by a psychiatrist using a dashboard that aggregated all of the patients’ data into a user-friendly format.

RESULTS

Of the 11 patients in the study, 6 patients attended the 3 outpatient consultations with the psychiatrist and completed the HDRS at each consultation. We found a positive correlation between the HDRS score and the variables of self-esteem, guilt, and mood (Spearman correlation coefficient 0.57). Seven patients completed the daily EMAs for 28 days or longer, with an average response rate to the EMAs of 62.5% (175/280). Furthermore, we observed a positive correlation between the number of responses to EMAs and the duration of follow-up (Spearman correlation coefficient 0.63).

CONCLUSIONS

This preliminary study with a prolonged follow-up demonstrates significant patient compliance with the smartphone app. In addition, the self-assessments performed by patients seemed faithful to the standardized measurements performed by the psychiatrist. The results also suggest that for some patients it is more convenient to use the smartphone app than to attend outpatient consultations.
Designing and Evaluating a Real-Time Automated Patient Screening System in an Emergency Department (Preprint)
Authors: Ni Yizhao , Bermudez Monica , Kennebeck Stephanie , Liddy-Hicks Stacey , Dexheimer Judith
Published: April 2019

BACKGROUND

One critical hurdle for clinical trial recruitment is the lack of an efficient method for identifying subjects who meet eligibility criteria. Given the large volume of data documented in electronic health records (EHRs), it is labor-intensive for the staff to screen relevant information, particularly within the time frame needed. To facilitate subject identification, we developed a natural language processing (NLP) and machine learning-based system, Automated Clinical Trial Eligibility Screener© (ACTES), which analyzed structured data and unstructured narratives automatically to determine patients' suitability for clinical trial enrollment. In this study, we integrated the ACTES into clinical practice to support real-time patient screening.

OBJECTIVE

Our objective was to evaluate the ACTES's impact on the institutional workflow prospectively and comprehensively. We hypothesized that compared with the manual screening process, using EHR-based automated screening would improve efficiency of patient identification, streamline patient recruitment workflow, and increase enrollment in clinical trials.

METHODS

The ACTES was fully integrated into the clinical research coordinator (CRC) workflow in the pediatric emergency department (ED) at Cincinnati Children's Hospital Medical Center. The system continuously analyzed EHR information for current ED patients and recommended potential candidates for clinical trials. Relevant patient eligibility information was presented in real-time on a dashboard available to CRCs to facilitate their recruitment. To assess the system's effectiveness, we performed a multidimensional, prospective evaluation for a 12-month period, including a time-and-motion study, quantitative assessments of enrollment, and post-evaluation usability surveys collected from the CRCs.

RESULTS

Compared to manual screening, use of ACTES reduced the patient screening time by 34% (P<0.0001). The saved time was redirected to other work-related activities that streamlined teamwork among the CRCs (P <0.05). The quantitative assessments showed that automated screening improved the numbers of subjects screened, approached and enrolled by more than 10%, suggesting the potential of ACTES in streamlining recruitment workflow. The post-evaluation surveys indicated that the system was a good computerized solution with satisfactory usability.

CONCLUSIONS

By leveraging NLP and machine learning technologies, the ACTES demonstrated good capacity for improving efficiency of patient identification. The quantitative assessments demonstrated the potential of ACTES in streamlining recruitment workflow and improving patient approach and enrollment. The post-evaluation surveys suggested that the system was a good computerized solution with satisfactory usability.
The preferences of patients with cancer regarding an app to help them to meet their illness-related information needs: a qualitative interview study. (Preprint)
Authors: Richards Rebecca , Kinnersley Paul , Brain Kate , Staffurth John , Wood Fiona
Published: April 2019

BACKGROUND

The shift from inpatient to outpatient and community cancer care means that more patients with cancer are required to manage their condition at home, without the direct supervision of their clinician. Subsequently, research has reported that many patients with cancer have unmet information needs during their illness. Mobile devices, such as mobile phones and tablet computers, provide an opportunity to deliver information to patients remotely. We aimed to develop an app intervention to help patients to meet their illness-related information needs in non-inpatient settings. In-depth qualitative research was required in order to gain an understanding of the views of the target users prior to design of the intervention.

OBJECTIVE

This study aimed to explore the information needs of patients with cancer and their preferences for an app and desired app features. Specifically, the perceived acceptability of an app, desired app features and the potential benefits and disadvantages of, and barriers to, an app were explored.

METHODS

Qualitative, one-to-one semi-structured interviews were conducted with patients with urological, colorectal, breast or gynecological cancers (n=23) across two hospitals in South Wales. Interviews were audio-taped, transcribed and analyzed using thematic analysis.

RESULTS

Findings indicated that barriers to information exchange and understanding in consultations, and identification of reliable information sources between consultations, appeared to contribute to patients’ unmet information needs. Consequently, app feature suggestions included a question prompt list, glossary of cancer terms, resources feature and a contacts feature. Anticipated benefits of this type of app included a more informed patient, improved quality of life, decreased anxiety and increased confidence to participate in their care. The anticipated barriers to app use are likely to be temporary or can be minimized with consideration of these findings during app development and implementation.

CONCLUSIONS

This study highlights cancer patients’ desire for an app intervention to help them to meet their information needs during and between consultations with their clinicians. This study also highlights the anticipated acceptability and benefits of this type of intervention, however further research is warranted.
Quality of Deaf and Hard-of-Hearing Mobile Apps: Evaluation Using the Mobile App Rating Scale (MARS) With Additional Criteria From a Content Expert (Preprint)
Authors: Romero Ryan Lee , Kates Frederick , Hart Mark , Ojeda Amanda , Meirom Itai , Hardy Stephen
Published: April 2019

BACKGROUND

The spread of technology and dissemination of knowledge across the World Wide Web has prompted the development of apps for American Sign Language (ASL) translation, interpretation, and syntax recognition. There is limited literature regarding the quality, effectiveness, and appropriateness of mobile health (mHealth) apps for the deaf and hard-of-hearing (DHOH) that pose to aid the DHOH in their everyday communication and activities. Other than the star-rating system with minimal comments regarding quality, the evaluation metrics used to rate mobile apps are commonly subjective.

OBJECTIVE

This study aimed to evaluate the quality and effectiveness of DHOH apps using a standardized scale. In addition, it also aimed to identify content-specific criteria to improve the evaluation process by using a content expert, and to use the content expert to more accurately evaluate apps and features supporting the DHOH.

METHODS

A list of potential apps for evaluation was generated after a preliminary screening for apps related to the DHOH. Inclusion and exclusion criteria were developed to refine the master list of apps. The study modified a standardized rating scale with additional content-specific criteria applicable to the DHOH population for app evaluation. This was accomplished by including a DHOH content expert in the design of content-specific criteria.

RESULTS

The results indicate a clear distinction in Mobile App Rating Scale (MARS) scores among apps within the study’s three app categories: ASL translators (highest score=3.72), speech-to-text (highest score=3.6), and hard-of-hearing assistants (highest score=3.90). Of the 217 apps obtained from the search criteria, 21 apps met the inclusion and exclusion criteria. Furthermore, the limited consideration for measures specific to the target population along with a high app turnover rate suggests opportunities for improved app effectiveness and evaluation.

CONCLUSIONS

As more mHealth apps enter the market for the DHOH population, more criteria-based evaluation is needed to ensure the safety and appropriateness of the apps for the intended users. Evaluation of population-specific mHealth apps can benefit from content-specific measurement criteria developed by a content expert in the field.
Nurse-Delivered Cognitive Behavioral Therapy for Adherence and Depression Among People Living With HIV (the Ziphamandla Study): Protocol for a Randomized Controlled Trial (Preprint)
Authors: Joska John A , Andersen Lena S , Smith-Alvarez Rosana , Magidson Jessica , Lee Jasper S , O’Cleirigh Conall , Safren Steven A
Published: April 2019

BACKGROUND

There is an unmet need to develop effective, feasible, and scalable interventions for poor adherence and depression in persons living with HIV in low- and middle-income countries (LMIC).

OBJECTIVE

This study aims to investigate the effectiveness of a nurse-delivered cognitive behavioral therapy (CBT) intervention for adherence and depression (CBT-AD) among persons living with HIV who are failing first-line antiretroviral therapy (ART) in Cape Town, South Africa.

METHODS

This study is a 2-arm randomized controlled trial of CBT-AD integrated into the HIV primary care setting in South Africa. A total of 160 participants who did not achieve viral suppression from their first-line ART and have a unipolar depressive mood disorder will be randomized to receive either 8 sessions of CBT-AD or enhanced treatment as usual. Participants will be assessed for major depressive disorder using the Mini International Neuropsychiatric Interview at baseline and 4, 8, and 12 months. The primary outcomes are depression on the Hamilton Depression Scale (HAM-D; as assessed by a blinded assessor) at the 4-month assessment and changes in ART adherence (assessed via real-time, electronic monitoring with Wisepill) between baseline and the 4-month assessment. Secondary outcomes are HIV viral load and CD4 cell count at the 12-month assessment as well as ART adherence (Wisepill) and depression (HAM-D) over follow-up (4-, 8-, and 12-month assessments).

RESULTS

The trial commenced in August 2015 and recruitment began in July 2016. Enrollment was completed in June 2019.

CONCLUSIONS

Results of this study will inform whether an existing intervention (CBT-AD) can be effectively administered in LMIC by nurses with training and ongoing supervision. This will present unique opportunities to further explore the scale-up of a behavioral intervention to enhance ART adherence among persons living with HIV with major depression in a high-prevalence setting, to move toward achieving The Joint United Nations Programme on HIV/AIDS 90-90-90 goals.

CLINICALTRIAL

ClincialTrials.gov NCT02696824; https://clinicaltrials.gov/ct2/show/NCT02696824

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/14200
КАРАКТЕРИСТИКЕ ОСУЂЕНИЧКИХ БАНДИ У РЕПУБЛИЦИ СРБИЈИ
Authors: Димовски Дарко , Костић Миомира
Published: April 2019

Starting from the concept prison gangs, who have given famous penologists Carlson, Garrett, Fleischer, Reason and others, the author pointed out that until now the subject of empirical research were not gangs of inmates in penitentiary institutions of the Republic of Serbia. Therefore, it was necessary to conduct a study to determine the characteristics of prison gangs in Serbia, where it came to comparing the results obtained with the characteristics of a gang of convicts in the US penitentiary system. The author has analyzed the structure of prison gangs in a correctional institution in Niš and in a correctional institution for juveniles in Valjevo, stating the mode of progression in the structure of gangs. The basis of the existence of gangs in prisons is engaging in criminal activities. Before he dealt what are the criminal activities of prison gangs in a correctional institution in Niš and in a correctional institution for juveniles in Valjevo, the author stated that the crimes carried out gangs of prisoners in US jails, noting that these criminal activities do not differ. One of the ways of carrying out criminal activities in prisons is the use of violence. While data on violence among convicts gangs in American prisons can be easily reached, the management of the correctional facility in Niš, as well as in a correctional institution for juveniles in Valjevo, does not keep such records, and it is impossible to know whether a particular violence in penitentiry institution has been set up as a result of relations in a prisoner gangs, and as a result of the conflict with the other prisoners' band, or due to other circumstances. However, in addition to the use of violence by prisoners' gang is due to code violations. Communication of prison gangs must be done in a discreet way with hindering information messages transmitted by the prison administration. Therefore, using a variety of encrypted messages in American prisons. Unlike them, the gang of convicts in a correctional facility in Niš and in a correctional institution for juveniles in Valjevo do not use an encrypted message, body language to communicate with each other, as well as a special code. The reason for this is the fact that prisoners' gang in prison in Niš and in prison for juveniles in Valjevo do not pose such a threat that prevents the functioning of the penitentiary institution committing various criminal acts, and therefore there is no need for special protection of communications of members of the prison gangs. The last part is dedicated to the code of conduct, stating the rules that must be respected.
PERSONALITY, COGNITION AND LIFE EVENTS AS PREDICTORS OF EMOTIONAL DISTRESS IN ADOLESCENCE
Authors: Marić Mia , Sakač Marija
Published: April 2019

The aim of this research was to examine the contribution of personality, cognitive style and life events to the prediction of the symptoms of emotional distress in adolescents. The sample consisted of 300 adolescents. In the analysis, the indicators of five personality dimensions were included - Neuroticism, Extraversion, Openness, Agreeableness and Conscientiousness, indicators of attribution dimensions- controllability, internality, stability and the global nature of causes, and importance of the situation, the number, type and occurrence  period of life events, and the severity of symptoms of emotional distress in adolescents.Life events have proved to be the best predictors of the symptoms of distress in adolescents. The most significant contribution to the occurrence of distress provided the total number of events. The probability of the occurrence of distress increases with the occurrence of chronic stressors and family problems. Significant contributors to the prediction of distress are also the dimensions of personality - Agreeableness and Conscientiousness, and attribution dimensions - externality and the importance of negative situations.
БЕРКОВ ДОПРИНОС ПРОУЧАВАЊУ ВОЈСКЕ КАО ДРУШТВЕНЕ ИНСТИТУЦИЈЕ
Authors: Старчевић Срђан , Кајтез Илија
Published: April 2019

Criticizing the social events in France during the French Revolution, Edmund Burke also dealt with military issues. He criticized the changes that the Revolution brought in the military organization in order to demonstrate the futility and harmfulness of the revolution. In this paper we have analyzed three types of his arguments against the reform of the army in France in order to check if those aspects of Burke's views on military are still valid. These are arguments against electing military officers for officers' duties, the arguments against a weak supreme commander and the arguments against interfering of political parties in the military and against political engagement of the soldiers. As a key social relationship that must prevail in the military, Berk emphasized discipline (as an internal functional relationship) and subordination (an external functional relationship, which refers to subordination to civil authorities). He underlined singularity and political neutrality of the military as its essential characteristics. He was the first to unequivocally point to the connection between officers and soldiers as the central point of the structure of a military. He proved that the military reform in France during the revolution would lead to a military dictatorship, but he failed to note that the reform also meant the abandonment of feudal mercenary military as a form of organization, as well as creating conditions for the introduction of a mass military based on general conscription. His understanding of the relations between military and civilian spheres, makes him one of the forerunners of the modern theories of civil-military relations.
ИСТОРИЈСКИ ОСЛОНАЦ ПРОГРЕСИВНОГ УМЕТНИЧКОГ ОБРАЗОВАЊА XXI ВЕКА – БЛЕК МАУНТИН КОЛЕЏ
Authors: Сарвановић Ана
Published: April 2019

Through theoretical analysis, the paper discusses the conceptual connection between the educational practice of Black Mountain College, an American college from the first half of the twentieth century, and contemporary practices that occur as the formation of the educational turn, artistic and cultural tendency noticeable from the mid-nineties of the twentieth century to the present. As one of the progressive art schools of the first half of last century, the Black Mountain College has developed a specific educational practice, which was specific by experimentation, practical and artistic approach to the problems and learning in the anti-hierarchical, cooperative atmosphere. Since interdisciplinary practices of educational turn put focus on the process, collaboration, and the use of different teaching methods and situations within and beyond the narrow institutional frameworks of art and art schools/academies, Black Mountain College is being established as an important historical basis in conceptual terms. However, in addition to pointing out the similarities in the ideas of the College and the educational turn, it is of great importance to point out the differences in circumstances and contexts of these types of educational practices and merely posing the questions about the significance and potential of Black Mountain for the contemporary art education.
ДРУШТВЕНЕ ИНТЕРНЕТСКЕ МРЕЖЕ И ТРАДИЦИОНАЛНИ МЕДИЈИ
Authors: Михајлов Прокоповић Анка Момчило
Published: April 2019

The aim of this paper is to present the ways and forms in which traditional media have adapted to the digital world, primarily to the Internet social networks and the interactive possibilities provided by them. The research question is: do and to what extent the traditional media use the opportunities offered by social media. During the search for the answer to this question, the results of this academic research and the results obtained from the in-depth interviews with the editors of the web sites of the six leading traditional media in Serbia carried out by the author of this paper were analyzed. The conclusion is that traditional media use social networks predominantly to promote their online editions, and that those media which want to be influential in this filed use social network sites as a source of information and generate a new genre - a live blog.
INTEGRATING DIGITAL TECHNOLOGIES INTO TEACHING PROCESS
Authors: Novković Cvetković Biljana , Stanojević Dragana
Published: April 2019

This paper wishes to highlight great significance of digital technologies that should be implemented to the highest extent possible in the teaching process. Digital literacy and digital competencies in today's highly developed technological world have been recognized as important aspects for the successful implementation of digital technologies in the teaching process. With this in mind, in this paper we tried to answer the questions as to for what purposes teachers use digital technologies the most and how interested the teachers are for the use of digital technologies. The conclusion is that teachers are highly interested in the application of digital technologies in teaching. Out of all the listed items, the teachers mostly used the Internet-based content  and Correspondence by e-mail in their work. The research was based on a descriptive investigative method. Surveys and scaling techniques for measuring teachers' attitudes were used. The present research was carried out between March and April 2017.The basic cohort in this research comprised 276 primary school teachers in the cities of Vranje and Nis. The nature of a sample is that of a stratified simple random sample.
PROSPERITY INDEX AS A MEASURE OF WELLBEING IN EUROPEAN UNION AND WESTERN BALKAN COUNTRIES
Authors: Gligorić Mirjana , Jovanović Gavrilović Biljana , Savić Ljubodrag
Published: April 2019

Composite indices have recently become a very popular measure for tracking the progress of national economies. One of them is Legatum Prosperity Index (LPI), a relatively new and comprehensive indicator, which describes in a unique way the level and the dynamics of prosperity in the countries across the world. In this paper, prosperity of European Union and Western Balkan states during the last ten years was analyzed and its drivers investigated, using data for LPI. Also, analysis was performed of the relationships of LPI with GDP per capita and Human Development Index, as well as of the deviation of LPI level from the one that could be expected based on GDP per capita level for each observed country. In addition, the paper examines convergence/divergence between developing European countries and old EU members according to the level of LPI and the key dimensions and components of this indicator. Results indicate that new member states have the most room for improvement in the Institutional dimension, or more precisely in the Personal Freedom component, whereas Western Balkan countries could speed up their prosperity by investing more into Environment, as well as into Education, Health, and Personal Freedom.
АНАЛИЗА РЕВИЗОРСКИХ ИЗВЕШТАЈА ОСИГУРАВАЈУЋИХ КОМПАНИЈА У РЕПУБЛИЦИ СРБИЈИ
Authors: Jovkovic Biljana
Published: April 2019

Successful and long-term compliance of insurance company’s operations with assumed risks is of fundamental importance for the economic system. Starting from the social significance of insurance institution and the need for stability in this activity, the systematization and analysis of the independent auditors’ reports of insurance companies’ financial statements between 2009 and 2016 was conducted. The structure and frequency of qualifications in auditors' reports, which are the result of non-compliance with financial reporting standards, were analyzed. All insurance companies are stratified to companies that were always issued auditor’s unmodified opinion in the observed period and companies that were at least once issued some form of qualification in the observed period, including the reasons for issuing unmodified opinion with on emphasis of matter. The results of the analysis showed that companies with unmodified opinion were mostly profitable, of foreign capital origin, and engaged auditors of the “Big Four”. Companies that were at least once issued some form of qualification in auditor’s opinion are predominant in the insurance sector, mostly operated at a loss and were of domestic sources of financing. Companies that were continuously issued modified opinion disappeared from the insurance market, entered into a voluntary liquidation procedure, or their operating license was revoked. Moreover, the frequency of certain audit firms in the verification of companies’ financial statements was analyzed. The results show that PWC audit firm had the largest participation in the audit of insurance companies, Deloitte of companies which were issued modified in opinion, while KPMG auditing firm reported the highest number of unmodified opinions in the insurance sector.
УТИЦАЈ ЉУДСКОГ КАПИТАЛА НА ПОСЛОВНЕ ПЕРФОРМАНСЕ ХОТЕЛСКИХ ПРЕДУЗЕЋА У СРБИЈИ
Authors: Slavković Marko , Ognjanović Jasmina Milorad
Published: April 2019

In a knowledge-based economy, the success, growth and development of hotel companies relies in a large extent on knowledge, since employees are directly involved in the process of service production and consumption. The results of numerous studies demonstrate the impact of human capital on business performances, so management must invest and improve human capital in order to create differentiated products / services and ensure a stable competitive position. The main goal of the research is to analyze the interdependence of human capital components and business performance of the hotels in Serbia. The research results confirm the influence of human capital on the non-financial performance of hotel companies. In order to test the structural relationships between variables, reliability analysis, factor analysis and structural modeling equation are employed.
GEOPOLITICS OF CONTAINMENT IN THE POST COLD WAR WORLD
Authors: Pejić Igor Miodrag
Published: April 2019

The main goal of this paper is to explain the need for geopolitics and how it influenced the decision making of various statesmen throughout political history. Since ancient times, geopolitical conditions have determined the courses and strategies of various civilizations driving them into conflict or allowing them to prosper. In the 19th century geopolitics became a necessary knowledge for statesmen, politicians and leaders who wished to engage into a turbulent arena of world politics. For them the geopolitics provided awareness and information about other world players, about their assets and liabilities, strengths and weaknesses. Following the rules of geopolitics grand strategies have been designed. The grand strategy of containment marked an entire epoch in modern human history. Employed by the US, containment was aimed against the Soviet Union in order to curb its expansion and to sustain the balance of power. Although successful, after its initial objective took a new shape of statehood, containment as a strategy had a rough time adjusting to the new world order. First section of the article will be dedicated to the development of geopolitics and how it influenced the states and their foreign policy decision making. In the second part of the article there will be an attempt to explain how containment worked as a grand strategy during the Cold War, its objectives, methods of applications and most importantly how does containment work in our contemporary world and is it viable as a strategy for achieving foreign policy goals?
Relato encadenado: Una experiencia de asesoría en línea para favorecer el trabajo colaborativo en el módulo “Tipos de Textos” del Bachillerato UVEG
Authors: Ortiz Rojas Alma Delia
Published: April 2019

En este texto se describe el proceso de asesoría virtual para propiciar el trabajo en equipo en el módulo “Tipos de Textos”. Esta experiencia está situada en el Bloque 4, titulado “Texto literario”; en éste, los estudiantes deben redactar, como evidencia de aprendizaje, un texto literario de manera colaborativa.

El módulo “Tipos de Textos” se ocupa de la revisión de las características de los textos informativos, científicos, argumentativos y literario. Los estudiantes tienen como objetivo conocer las características de los textos, pero, además, otra parte fundamental es la práctica de la redacción de éstos.

El objetivo es presentar cómo fue el proceso de asesoría virtual, por ejemplo, la fase de apertura, fase de seguimiento y fase de cierre o autoevaluación de la interacción de los participantes. Además, se busca compartir una experiencia de asesoría virtual en el módulo “Tipos de Textos”.
Cuestionario sobre conocimientos y prácticas de la prevención en odontólogos: diseño y validación
Authors: Aguilar Díaz Fátima Del Carmen , Arcos Velasco Magdalena Del Rocío , Ramírez Trujillo María De los Ángeles
Published: April 2019

Objetivo - diseñar y evaluar la validez y confiabilidad de un cuestionario para medir los conocimientos y prácticas de la prevención en odontólogos de práctica clínica en México.

Método - se creó un banco de preguntas evaluado por un grupo de expertos a través de la prueba de Lawshe modificada para determinar la validez de contenido. Se realizaron 3 pruebas piloto para la evaluación y ajuste del cuestionario. Se aplicó el cuestionario a odontólogos (n=149), para evaluar la consistencia interna con el Coeficiente Alpha de Cronbach y la repetibilidad con el Coeficiente de Correlación de Intraclase (CCI); además se evalúo la validez de convergencia con el Coeficiente de Correlación de Spearman.

Resultados - el CPPO se conformó por 37 ítems: conocimientos (23), prácticas (14) y dos preguntas globales. Validez de contenido: >0.64. Los valores de consistencia interna: CPPO α= 0.606, Conocimientos y Prácticas α= 0.639, y 0.687 respectivamente. Los valores de CCI fueron para CPPO = 0.556, para Conocimientos CCI=0.815 y Prácticas CCI=0.929. Se observó correlación estadísticamente significativa entre los puntajes de las dimensiones de conocimientos y prácticas con las preguntas globales correspondientes.

Limitaciones - la limitante principal en este estudio es el tamaño de muestra para la evaluación de la repetibilidad.

Principales hallazgos - el cuestionario de Conocimientos y Prácticas sobre la Prevención en Odontólogos (CPPO) cuenta con validez y confiabilidad aceptables para ser aplicado en odontólogos mexicanos.
Relación del contrato psicológico con la intención de compartir conocimiento tácito y transferencia intraorganizacional
Authors: Salazar Fierro Petra , Melgar Mayardo Josefa , Máynez Guaderrama Aurora Irma , Cavazos Arroyo Judith
Published: April 2019

Objetivo - analizar si el contrato psicológico relacional impacta a la transferencia de conocimiento tácito dentro de la organización, a través de la mediación de la intención para compartir este activo intangible.

Método - se realizó una investigación cuantitativa, de alcance correlacional, de diseño no experimental transversal, y se utilizó una muestra no probabilística en la recolección de 346 cuestionarios de colaboradores mando medio en la industria de autopartes en Ciudad Juárez Chihuahua, México. El análisis de los datos se llevó a cabo mediante el modelado de ecuaciones estructurales utilizando Mínimos Cuadrados Parciales (PLS).

Resultados - se confirma que el contrato psicológico relacional influye positivamente tanto con la intención de compartir conocimiento tácito, como con la transferencia de conocimiento tácito dentro de la organización y la influencia que recibe ésta de la intención de compartir dicho conocimiento.

Limitaciones - los resultados obtenidos son evidencia única y exclusivamente de la industria de autopartes en esta ciudad, los cuales pueden ser diferentes a otras poblaciones, debido al contexto cultural y sector productivo.

Principales hallazgos - existen fuertes implicaciones entre las variables estudiadas y este sector productivo, ya que las organizaciones reconocen la importancia y significado del conocimiento tácito de sus empleados, por lo que deben comprometerse a mantener buenas relaciones interpersonales e incentivos motivacionales para sus empleados con la finalidad de que este activo intangible sea compartido.

 
Búsqueda de primers y optimización de técnicas para la determinación de marcadores de ADN microsatélites en langostino argentino (Pleoticus muelleri)
Authors: Gesto Estefanía Soledad , Marcucci Valeria , De Carli Pedro
Published: April 2019

El langostino argentino (Pleoticus muelleri) se distribuye a lo largo de las costas del Océano Atlántico Sudoccidental, entre los 20º y 50º de Latitud S. En Argentina constituye en la actualidad uno de los recursos de mayor importancia para la actividad pesquera. El elevado valor comercial de este crustáceo en los mercados internacionales lo ha situado como uno de los principales productos de exportación pesquera argentina, representando una participación del 61% del total de exportaciones del sector, con un ingreso anual superior a los 1.200 millones de dólares estadounidenses.

En la actualidad, se dispone para la especie de un estudio genético restringido a la zona sur de su distribución (entre los 42 y 47º de latitud S) y que analiza la diversidad de un segmento de ADN mitocondrial del gen COI, y otro que estudia la variabilidad genética del langostino P. muelleri en toda su área de distribución geográfica mediante el análisis de un fragmento de ADN mitocondrial correspondiente al gen región control (CR).

Este trabajo tiene como objetivo evaluar marcadores moleculares microsatélites como información de base para el estudio poblacional en el langostino argentino.

A partir de bibliografía se seleccionaron cuatro (4) primers que permitieron amplificar microsatélites en otras especies de la misma familia (Solenoceridae).

Solo se han obtenidos resultados de amplificación a partir de un par de iniciadores (ZG-71). La secuenciación de estos fragmentos no permitió detectar la conservación de los microsatélites esperados para el desarrollo del marcador específico.
La trayectoria profesional de los graduados de las carreras docentes de la UART-UNPA entre 1990 y 2015: Conocer para comprender y reflexionar sobre los 25 años de formación docente en la Cuenca Carbonífera
Authors: Assat Mónica Alejandra , Bazán Sonia Raquel , Ciancia Daniela Beatriz , Sandoval Griselda
Published: April 2019

El presente artículo tiene como objetivo básico comunicar a los lectores los resultados del Proyecto de Investigación 29/C060 “La trayectoria profesional de los graduados de las carreras docentes de la UART-UNPA entre 1990 y 2015: Conocer para comprender y reflexionar sobre los 25 años de formación docente en la Cuenca Carbonífera”, radicado en el Instituto de Educación y Ciudadanía de la Unidad Académica Río Turbio, sede de la Universidad Nacional de la Patagonia Austral.

Comenzando por una mirada retrospectiva a través de la historia de la institución universitaria, luego se presentan las principales categorías de análisis que se han tenido en cuenta en la investigación. Posteriormente, se explica la metodología utilizada en el proceso de investigación, que consistió fundamentalmente en la construcción y aplicación de diversos dispositivos a fin de indagar en los diferentes trayectos laborales-profesionales de los graduados universitarios. A continuación, se exponen los resultados obtenidos a partir de dichos dispositivos constituidos por los talleres de docentes, la reflexión, la encuesta –presencial y mediada por TICs-, y la interpretación de un cortometraje, hasta arribar a las conclusiones a modo de palabras finales.
SYSTEMIC CHEMOTHERAPY IN APPENDICEAL ADENOCARCINOMAS WITH PERITONEAL METASTASES. IS IT WORTH IT?
Authors: Morera Ocón Francisco J , Camps Vilata Bruno
Published: April 2019

Introduction: The role of systemic chemotherapy (SC) in the management of metastatic appendiceal adenocarcinomas is not defined.Methods: We perform an observational study of patients treated of peritoneal metastases from appendiceal neoplasm between June 2004 and December 2017. They were referred to our hospital for CRS HIPEC. Systemic Chemotherapy regimens were decided by the referring oncologist. We analyze PCI, CC, and use of SC. Overall survival and progression free survival were compared attending to histologic subtype (high- and low-grade adenocarcinomas) and the use of SC.Results: 60 patients were included, 26 were male, median age 63 years (26-81). Median follow-up of 38 months [2-155]. The predominant histologic subtype was mucinous adenocarcinoma (58/60), 1 was colonic type, and 1 adenocarcinoid with signet ring cells. Four patients had extraperitoneal metastases, 2 hepatic metastases (1 with high-grade mucinous adenocarcinoma and 1 with colonic adenocarcinoma), and 2 in the low-grade group developed parenchymal lung disease. Three patients died in the postoperative period. Systemic chemotherapy was administered in 26 patients/57. No difference were observed in the OS and PFS regardless the use of SC in the high- and in the lo-grade groups. Conclusions: The use of SC in low-grade mucinous adenocarcinoma subtype is not supported by our results, and there is no literature date supporting it neither. Palliative SC in high-grade patients deserves of clinical trials for been accepted as standard of care, when benefits are not clearly established by evidence and toxicities are not negligible.
Oncoplastic breast surgery in a man, is it possible? Round-Block tecnique for the treatment of a giant lipoma
Authors:   Hospital Clínico Universitario, Valencia, Pérez Santiago Leticia , Adrianzen Vargas Marcos , Buch Vila Elvira , Bellver Lobato Gemma , Marín Montes Antonio , Martinez Aspas Ana , Ortega Serrano Joaquín
Published: April 2019

Abstract
The round block oncoplastic technique has proven to be a safe surgical approach in the management of breast cancer tumours. This procedure is useful to achieve resection of large tumours while maintaining a good cosmetic outcome. Recently, the safety of this technique has allowed its use in the treatment of other pathologies without complications. On the other hand, lipomas are the most frequent tumours in the chest wall. However, only 1% of them are larger than 10cm. In giant lipomas, a complete resection is needed to allow a complete anatomopathological study. We report a case of a 50-year-old man with a soft mass in the right breast, a subpectoral lipoma of 25x23x12 cm, without invasion of adjacent vital structures was diagnosed using computed tomography (CT) scan. Due to the benign characteristics, a resection was performed using the round-block technique. The postoperative course was uneventful and the patient was discharged 24 hours after the surgery.
QUISTOGASTROSTOMIA Y NECROSECTOMÍA LAPAROSCÓPICA TRAS PSEUDOQUISTE PANCREÁTICO
Authors:   Hospital Universitari Son Espases, Ambrona Zafra David , Rodríguez Pino José Carlos , Morón Canis José Miguel , Molina Romero Francesc Xavier , Palma Zamora Elías , González Argenté Francesc Xavier , Morales Soriano Rafael
Published: April 2019

Abstract
Introducción: El tratamiento de la Pancreatitis Aguda Necrotizante (PAN) y sus secuelas, ha experimentado un cambio sustancial desde la incorporación del abordaje mínimamente invasivo secuencial ("Step-Up Approach").

Caso Clínico. Presentamos el caso de un paciente de 76 años con antecedentes de hipertensión arterial y dislipemia, que ingresó con una pancreatitis necrotizante litiásica y fallo de tres órganos (Respiratorio, Hemodinámico y Coagulación). La evolución en UCI fue favorable con resolución del fallo multiorgánico, pero presentando una colección retropancreática de 20 cm de diámetro. La estancia en planta fue favorable. La punción ecoguiada de la lesión no mostró células malignas, ni crecimiento de microorganismos. El TAC a las 4 semanas demostró la presencia de una colección retrogástrico de 15x12 cm, con paredes definidas y presencia de abundantes restos sólidos en su interior, sugestivos de tejido necrótico. Tras 45 días de ingreso, la paciente fue dada de alta a domicilio, con seguimiento en consulta externa, observando persistencia del pseudoquiste con restos necróticos. Dada la persistencia del pseudoquiste después de 12 semanas, se decidió realizar quistogastrostomia laparoscópica con colecistectomía en el mismo acto quirúrgico.

Intervención. Se realizó un abordaje laparoscópico con 4 trócares, apreciándose una tumoración que abombaba el cuerpo y antro gátricos. Se realizó una gastrostomía anterior con aspiración de abundante líquido y restos necróticos, así como una quistogastrostomía con endograpadora, necrosectomía y colecistectomía. El postoperatorio discurrió sin incidencias, con alta a los 10 días. La anatomía patológica informó de tejido pancreático necrosado sin atipias celulares. La paciente permanece asintomática un año después de la intervención.

Conclusiones. La cirugía mínimamente invasivo ha cambiado el abordaje de la PAN y sus complicaciones. El abordaje laparoscópico permite realizar quistogastrostomías y necrosectomías de una manera segura y en un sólo procedimiento, con el consiguiente beneficio para el paciente.
URINOTHORAX: AN UNUSUAL CAUSE OF MASSIVE PLEURAL EFFUSION
Authors: Bauza Quetglas Jose Luis , Fullana Maria Isabel , Asensio Javier , Díaz Manuel , Pinheiro A.M. , Asensio Javier , Casu Vasile Cristian , Del Rio Manuel
Published: April 2019

A 74 year-old male with a history of high blood pressure and hyperuricemia was admitted to the hospital with asthenia, unquantified weight loss, dyspnea on moderate exertion for 2 weeks, and diffuse abdominal pain. Blood leukocyte count was 12400/uL, creatinine 0.98 mg/dL, CRP 19 mg/dL, and LDH 318 U/L. The chest X-ray showed a right pleural effusion and the pleural fluid was suggestive of an exudate. Thorax and abdominal CT scan revealed a polycystic right kidney with grade IV hydronephrosis and suggested the presence of a nephropleural fistula. The thoracocentesis was repeated and the pleural fluid / serum ratio of creatinine obtained was higher than 1 (1.35 mg/dL), which is a diagnostic criterion for urinothorax. Finally, a retrograde pyelography was carried out, and confirmed the passage of urinary tract fluid into the pleural cavity. A thoracic drainage tube and a nephrostomy through the superior calyx were placed, both draining purulent material. One month later, the control CT shows a right atrophic kidney and a reduction of the size of the fistulous path.
Urinothorax is an infrequent and underdiagnosed pathology, with few cases reported. It is usually presented as a transudative pleural effusion. Currently, no test is available to confirm the diagnosis, although the ratio of serum creatinine/pleural creatinine could suggest the presence of urinothorax. Radiographic imaging is useful to support the diagnosis. Management of a urinothorax requires a multidisciplinary approach with an emphasis on the correction of the underlying urinary tract pathology, and once corrected, this often leads to a rapid resolution of the pleural effusion.
Algunas Boletaceae que fructifican en el sur de Chile
Authors: Valenzuela E. , Moreno G. , Grinbergs J.
Published: April 2019

Se citan cinco taxa de Boletaceae (s. lato) que fructifican en los bosques del Sur de Chile. Se aportan microfotografias de sus caracteres más importantes y se mencionan aspectos ecológicos. Suillus tomentosus(Kauffman) Singer Snell & Dick, se cita por primera vez para Chile.