bluuebunny/crossref_metadata_2025 huggingface dataset:
Language Learning Motivation among Senior High School Students
Authors: Bhuana Gartika Pandu
Published: September 2019

Abstract Motivation is one of main determinant factor in learning second or foreign language. There are two types of motivation, which are integrative and instrumental motivation. Both of them play an essential role of the success in learning second or foreign language. Unfortunately, there is some debate about which kind of motivation is important for second language learner. Therefore, the aim of this study is to investigate the senior high school studentsâ€™ motivation toward learning English as a second language. The study is quantitative design. The participant of this study was twelve grade students at one of senior high school in Bandung. The data were obtained through questionnaire. The used questionnaire was integrative and instrumental motivation scale of Gardnerâ€™s Attitude/Motivation Test Battery (AMTB) that is adapted by Vaezi (2010). The questionnaire has 5-point scale ranged from â€œstrongly disagreeâ€ to â€œstrongly agreeâ€. The data gained then was analyzed using SPSS 16.0. The result of the study showed that senior high school students were instrumentally motivated in learning English as a second language. In their point of view, learning English was important for supporting their future job and career. Keywords: Integrative and instrumental motivation, senior high school students
Awareness about Property Rights among Indian University Students
Authors: Aveni Kamal , Goswami Tridib , S. Saraswathy
Published: September 2019

Economic independence of women is a major catalyst in achieving equality for women. In a developing country like India women are more culturally adapted and their property rights are still in dreams. There are supporting legal system for Indian women in case of property rights, however many a time’s women are not willing to utilize it because of fear of break of relationship. The present study attempts to study the knowledge of married educated women on matrimonial property rights in India. This shows that the respondents have minimum knowledge on property rights, even when they have knowledge the respondents are not ready to get their property from their relations because of the fear of break of relationships. On the other hand, the male counterparts are not ready to share their property with their sisters. This shows that legal system prevails in document form and in no way it helps women in grass root level.
The defeatist behaviors of addicts in adolescence from the point of view of teachers: the causes and Counseling processors
Authors: Al-Qraghuli Hassan
Published: September 2019

The study aimed to identify the defeatist behaviors of addicts in adolescence and youth in the teachers' perspective: their causes and their Counseling processors. The descriptive approach was used by the researcher and a random sample of teachers (270) was selected in the intermediate school. the researchers adapted the questionnaire as a tool to identify the reasons of addict's behaviors and extension treatment. The results of the research indicated the varied causes of the defeatist behavior of the addicts :The questionnaire included (41) reasons for the defeatist behavior, and the analysis of the extension treatments included (36) Counseling procedures descending order, and in the light of the results of the research, some conclusions, recommendations and suggestions crystallized .
Knowledge flexibility of students in the stage prep
Authors: Al-maeahy Iman , Rady Afrah
Published: September 2019

measure the cognitive flexibility of middle school students. The study sample consisted of (400) students from the preparatory stage of the Directorate education of Baghdad Karkh third was chosen in a simple random way. The two researchers adopted a measure of cognitive flexibility according to Spiro (1988) Consisting of (30) paragraph consisting of two areas, namely, spontaneous responses and adaptive responses. The results showed that middle school students have knowledge flexibility as well as the absence of differences in cognitive flexibility depending on gender variable.
El reto de nuestra medicina interna: investigación y publicación
Authors: Indacochea-Cáceda Sonia
Published: September 2019

La Unesco reconoce la investigación científica como “bien común” y que un “personal con talento y capacitado constituye la piedra angular de la capacidad de un país para la investigación y el desarrollo experimental”.
Prevalencia y factores de riesgo de neuropatía diabética periférica en pacientes recientemente diagnosticados de diabetes mellitus tipo 2 en un hospital nacional
Authors: Solís-Villanueva José , Michahelles-Barreno Claudia , Rodríguez-Lay Elba Giovanna , Farfán-García Juanita , Anticona-Sayán María , Curo-Carrión Nataly , L. Avilez Jose , Akehurst Harold , Miranda-Montero J. Jaime
Published: September 2019

Objetivo. Determinar la prevalencia y factores de riesgos asociados de neuropatía diabética periférica (NDP) en pacientes recientemente diagnosticados de diabetes mellitus tipo 2 (DM2) en el Hospital Nacional Arzobispo Loayza (HNAL). Material y MétOdOs. Estudio analítico prospectivo de corte transversal en pacientes del servicio de Endocrinología del HNAL, Lima. Se reclutaron pacientes mayores de 18 años con diagnóstico reciente (menor de 3 meses) de DM2 según los criterios ADA. Se excluyó a pacientes con diabetes gestacional, diabetes secundaria, antecedente de neuropatía periférica no diabética y en crisis hiperglucémica. Los pacientes reclutados fueron evaluados con el biotensiómetro para calificar como portador de NDP a los que no se les encontró un umbral de percepción de vibración mayor de 25 V en la región plantar del primer dedo de al menos uno de los pies. Para describir las características de la población se usó frecuencias y porcentajes para variables categóricas, media y desviación estándar (DE) para variables continuas. Se calculó la prevalencia de NDP usando frecuencia y porcentaje y se utilizó ji cuadrado para explorar potenciales factores relacionados a NDP. resultadOs. Se reclutaron a 96 pacientes, con una edad media de 52,6 años (DE ± 12,3) y 59 (61,5 %) de sexo femenino, con índice de masa corporal promedio de 30,2 kg/m2 (DE ± 5,0) y HbA1c promedio de 9,9 % (DE ± 2,8 %). La presión arterial sistólica y presión arterial diastólica promedio fueron 114,1 mmHg (DE ± 15,0) y 69,9 mmHg (DE ± 10,4), respectivamente. La NDP estuvo presente en 16 pacientes (16,7 %). La edad mayor de 60 años estuvo asociado a una mayor prevalencia de NDP. Teniendo como desenlace NDP, la razón de prevalencia cruda de edad ≥ 60 años en comparación a edad < 60 años fue de 4,86 (IC95% 1,69-13,9). En el modelo ajustado por sexo y HbA1c > 8 %, la razón de prevalencia para edad > 60 años fue de 5,24 (IC95% 1,82-15,12). COnClusión. Casi 2 de cada 10 personas con diabetes mellitus tipo 2 (DM2) ya tienen neuropatía diabética periférica (NDP) al momento del diagnóstico, y que la prevalencia de la NDP es cinco veces mayor en los mayores de 60 años que en los más jóvenes. Esto enfatiza la necesidad de realizar un tamizaje para NDP desde el momento del diagnóstico de DM2, sobre todo en la población mayor de 60 años, e implementar medidas de cuidado de pies y buen control glucémico en los en los que se encontrara NDP.
Tuberculosis pulmonar en los trabajadores de salud del Hospital Nacional Dos de Mayo de Lima
Authors: Contreras Carlos , Cortez Alberto , Lira Humberto
Published: September 2019

OBJETIVO. Determinar el perfil epidemiológico de trabajadores de salud (TS) del Hospital Nacional Dos de Mayo (HNDM) de Lima, Perú, afectados de tuberculosis pulmonar (TP). MATERIAL Y MÉTODOS. Estudio observacional, descriptivo y retrospectivo. La población consistió de TS con diagnóstico de TP. Se recolectaron variables epidemiológicas: edad, sexo, comorbilidad, grupo ocupacional, servicio o departamento al cual pertenece, situación laboral, tiempo de servicio, entre otras. Para las variables cuantitativas se determinó la media, desviación estándar, rango, valor inferior y superior, para las variables cualitativas se utilizó el análisis de frecuencia. Se determinaron tasas de incidencia por 100 000, frecuencias absolutas y relativas, pruebas estadísticas de tendencia central y de dispersión. Se consideró el valor de p < 0,05 como significativo. RESULTADOS. La tasa de incidencia habitual de TP fue de 348 por 100 000. El grupo más afectado fue el personal técnico auxiliar (23,96 %). El promedio de edad fue 35,52 años (DE ± 10,22), 70,83 % fueron menores de 40 años. El tiempo promedio de trabajo hospitalario fue de 9,23 años (DE ± 7,32). 91,70 % tuvieron tiempo de servicio ≤ a 20 años. 66,67 % pertenecieron a los departamentos de Medicina y Emergencia. De los TS afectados, 72,92 % fueron de las áreas clínicas, 11,45 % de áreas quirúrgicas y 3,13 % pertenecieron a servicios auxiliares y de apoyo diagnóstico. CONCLUSIONES. La tasa habitual de TP en TS del HNDM fue aproximadamente 4,22 veces mayor que la tasa de incidencia nacional. Los TS más afectados fueron el personal técnico auxiliar, los nombrados, los menores de 40 años, aquellos con tiempo de servicio menor de 20 años y los que laboraban en áreas clínicas, y más del 60 % pertenecieron a los departamentos de Medicina y Emergencia.
Enfermedad de Paget ósea: presentación poliostótica en una paciente con cáncer de cérvix
Authors: Bojórquez-Castillo Héctor , Trujillo-Aguirre María de Lourdes , Tarco-Virto Anita , Luis Paz-Ibarra José
Published: September 2019

Mujer de 65 años con antecedentes de neoplasia maligna de cérvix y neuralgia del trigémino presenta una historia de dos años de dolor crónico e intermitente en región lumbar y cadera izquierda. En el seguimiento ambulatorio se le solicitó estudio radiográfico de cadera, en el que se halló una lesión ósea esclerosa en el alerón ilíaco izquierdo y fosfatasa alcalina de 225 U/L, sugerentes de enfermedad de Paget ósea. Fue hospitalizada para estudio de extensión y confirmación por biopsia ósea ante la posibilidad de metástasis ósea. El estudio óseo, la TEM corporal total y la gammagrafía ósea mostraron lesiones similares en el maxilar inferior derecho y la columna vertebral. Se administró bisfosfonatos mejorando de manera importante el dolor óseo.
Neurocisticercosis racemosa
Authors: Palacios-Ordóñez Enver Vantroi , Lozano-Rodas Sabel , Portilla-Paredes Fiorella Carolina
Published: September 2019

Mujer de 44 años de edad que ingresó por emergencia con cefalea holocraneana, progresiva e intensa, vómitos explosivos y hemiparesia derecha progresiva, asociados con múltiples caídas. Las imgenes evidenciaron formaciones quísticas conglomeradas en el valle silviano izquierdo y en parte superior de la cisterna pretroncal no captadoras de contraste, planteando el diagnóstico de neurocisticercosis racemosa.
Infarto renal bilateral por fibrilación auricular crónica
Authors: Contreras Carlos
Published: September 2019

Varón de 91 años, con fibrilación auricular paroxística de siete años de diagnóstico, en tratamiento anticoagulante irregular, con abandono total de anticoagulante orales desde hace cuatro meses. Acudió a la emergencia por hematuria, fiebre y dolor lumbar.
Abordaje del paciente y sus familiares: algo más que la relación médico-paciente
Authors: Vílchez-Rivera Stalin
Published: September 2019

Abordar a un paciente es tan importante como abordar a los familiares y no solo debemos ver como un proceso formal sino que el médico debe ser presentable, educado, humano, ético, presencial, educador, comunicativo, neutral, decente, bioseguro, seguro e instruido, todo lo cual permitirá obtener mejores datos clínicos, para llegar al diagnóstico con mayor aproximación, evitar el rompimiento de la relación médico-paciente y disminuir los procesos legales.
The Essence and Measurement of Trade Show Event Experiences
Authors: Rai Shivam , Nayak Jogendra Kumar
Published: September 2019

Trade shows have been seen as the key drivers of the economic and tourism growth. Experiences are the core of any trade show. However, research on trade shows are primarily concerned with trade show performance, leaving experiences as an unexplored subject. The purpose of this study
is to understand the essence of experiences and development of a trade show experience scale. This exploratory study was carried out in three phases: identifying the domain of construct and generation of items, item selection, and scale purification. A 21-item scale comprised of five dimensions
associated with experience (affective association, cognitive association, unique association, physical association, and well-being association) emerged. Marketers should focus on high-end participant's experiences. Existing experiential practices in the trade show industry can be improved
by using the two new dimensions found in the study (well-being associations and unique associations). This study contributes to the existing literature by exploring new experiential attributes (unique and well-being associations). Findings suggest that participants do not see trade shows merely
as a business event to fulfill their meaningful objectives, but also as a platform that addresses their hedonic well-being. Future research should be done to complement the findings with a heterogeneous population sample. This research has conceptualized and developed a trade show experience
scale comprising of five unique dimensions that are yet to be explored in trade show context. The findings of the study provide a measure for the meaningful evaluation of a trade show event experience. Trade show organizers may use the study outcomes to enhance the effectiveness of events.
Art sur le Web
Authors: Gentès Annie
Published: September 2019

Les œuvres sur internet semblent reprendre les pratiques traditionnelles d’emprunts et de collages. En fait, elles révèlent les conditions particulières de cette pratique citationnelle dans les machines numériques et en réseau et notamment son économie politique. Abondance et disponibilité aujourd’hui qualifient le régime des textes sur internet avec pour conséquence une accentuation de l’usure des images. Cette situation particulière a contribué à faire basculer de la problématique de la mimesis à la problématique du jeu sur les variations. Le travail des artistes se déplace en effet d’une critique des images à la création d’outils et de cadres pour les lire et les réécrire. Avec eux, l’internaute prend de la distance par rapport aux matériaux mais s’implique dans leur composition et leur interprétation.
Le commerce électronique
Authors: Piaptie Georges Bertrand Tamokwe
Published: September 2019

Le commerce électronique** est désormais l’une des principales applicationséconomiques de l’Internet. Face à son essor, les pays pauvres déjà confrontés aux traditionnels problèmes du sous-développement sont conduits à se demander s’ils peuvent techniquement s’engager à investir dans cette forme de commerce et s’ils doivent le faire. L’article traite principalement de ces deux interrogations auxquelles il propose des réponses positives. Pour la première, des estimations indiquent que le développement du e-commerce nécessite des niveaux de technologies actuellement disponibles dans ces pays. Pour la deuxième, outre les arguments traditionnels sur la complémentarité entre le commerce et la croissance, le e-commerce est un facteur de réussite des politiques de vulgarisation des NTIC et un moyen d’amélioration de la condition des producteurs agricoles par exemple, grâce aux économies de coûts de transaction dans les circuits de commercialisation. Toutefois, son développement requiert un minimum d’organisation et d’infrastructures d’accompagnement.
Récupération ou hybridation
Authors: Coris Marie
Published: September 2019

Dans cet article, nous analysons certaines formes de rencontres marchandes possibles entre les communautés de développeurs de logiciels libres et les acteurs économiques. Il s’agit de questionner l’intérêt des industriels à “faire” du logiciel libre au regard des projets portés par ces communautés. Deux formes concrètement observables de l’hybridation sont alors successivement étudiées : celle des “licences hybrides” perçues sous l’angle de la “récupération” marchande du phénomène et celle des consortiums ouverts laissant entrevoir une coopération véritable entre firmes et communautés autour des questions de standardisation du logiciel.
El influencer 2.0 turístico: de turista anónimo a líder de opinión
Authors: Martínez-Sala Alba-María , Monserrat-Gauchi Juan , Searra Saavedra Jesús
Published: September 2019

Introducción y objetivo. Esta investigación se centra en la figura del influencer en el sector turístico y en su integración en las estrategias de comunicación de los principales destinos españoles. Metodología. Se procede a un análisis del alcance de los principales influencers 2.0 turísticos en el conjunto de redes sociales y, de forma específica, en Facebook. En esta red social se evalúa, además, su potencial comunicativo y relacional mediante un análisis de contenido cuantitativo. El estudio se completa con el punto de vista de los responsables de comunicación digital de la muestra de destinos. Resultados y conclusiones. Se confirma la importancia y ventajas del influencer 2.0 turístico, así como su plena implementación en las estrategias de comunicación turística. La investigación y sus conclusiones son una contribución al escaso cuerpo teórico sobre esta figura en el sector turístico. Así mismo, el proceso metodológico constituye un modelo de selección de influencers 2.0 turísticos de interés académico y profesional.
CO2 Corrosion of Mild Steel Exposed to CaCO3-Saturated Aqueous Solutions
Authors: Mansoori Hamed , Young David , Brown Bruce , Nešić Srdjan , Singer Marc
Published: September 2019

The behavior of CO2 corrosion of mild steel was studied in a CaCO3 saturated aqueous solution. The bulk water chemistry ([Fe2+], [Ca2+], and pH) was controlled and the mass transfer characteristics inherent to the experimental setup were well defined. A combination of weight loss and electrochemical techniques, as well as surface characterization tools, were used to assess the behavior of corrosion products over long-term experiments. Three corrosion periods were identified based on the analysis of the corrosion rates and Nyquist response values versus exposure time. Residual Fe3C was the early corrosion product; however, FexCayCO3 (x + y = 1) precipitated within its pores over the course of experiments where a favorable local water chemistry was achieved, regardless of the bulk solution. Results show that the presence of Ca2+ did not jeopardize the final protectiveness of corrosion products.
People’s Preferences and Attitudes about Spiritual Leadership Values in Public Organization: The Case of Turkey
Authors: Karagul Vural
Published: September 2019

The purpose of this study is to examine if Turkish people prefer their leaders with spiritual leadership characteristics. The findings reveal that Turkish people prefer their leaders with spiritual values and characteristics.  In addition, Turkish people in both the East and West part of Turkey, after spiritual leadership values and characteristics, want to see their leaders with religious values. However, the magnitude of preferences of religious values in the East part of Turkey is higher than in the West part of Turkey.These results can be implemented training the high ranked government officials such as bureaucrats and district governors to empower them with spiritual leadership values and characteristics; therefore, they could provide better services for the benefits of people. Also, political parties can bring spiritual leadership values to their agenda. They can emphasize on these values in their party programs and to raise awareness among the party leaders and members to inspire and sustain people.
The Role of Small and Medium Enterprises (SMEs) in Employment Generation and Economic Growth: A Study of Marble Industry in Emerging Economy
Authors: Al-Haddad Lara , Sial Muhammad Safdar , Ali Imdad , Alam Rahmat , Khuong Nguyen Vinh , Khanh Thai Hong Thuy
Published: September 2019

This study is undertaken to find out how SMEs contribute to the economy in terms of employment generation and its impact on the economic growth of the country. Small and Medium Scale Enterprises (SMEs) is accepted globally as a tool for empowering the citizenry and economic growth. In Pakistan efforts have been made by successive governments to increase employment opportunities, reduce poverty and accelerate economic growth by increasing foreign direct investment, diversifying the economy, enacting policy frameworks which favor small business ownership and entrepreneurship programs. Specifically, this study tends to figure out: how SMEs contribute to employment generation, whether a significant number of people is employ within the SME sector; whether the SMEs increase the income level of people. The total number of employees was 255 being selected randomly from Swat marble industries. A questionnaire was constructed and distributed to the selected respondents. The responses were collected and analyzed using the Statistical Package for Social Sciences (SPSS) analytical tool. The study exposes that SMEs play a vital role in employment generation. There is a positive relationship between SMEs and unemployment reduction. The result also shows that there is a positive relationship between SMEs and increase in income level. This study may be beneficial both for practitioners and academicians. For practitioners, the current study may help to devise policies and strategies concerning SMEs to generate employment opportunities. The current study may lead to the generalizability of existing research in the same field as for academic aspect is a concern.
Role of Advertising Expenditure as an Influential Non-traditional Regressor in Russia’s Money Demand Specification
Authors: Hiew Lee-Chea , Puah Chin-Hong , Arip Mohammand Affendy , Chong Mei-Teing
Published: September 2019

The term advertising refers to the strategy that affects consumer behaviour and induces higher household final consumption expenditure (HFCE), which is associated with incredibly demanding for money upon transaction usages and a reduction in search costs. The model of money demand that is stable, reliable and well defined is crucial for central banks in formulating their monetary policy to minimise the gap between the supply and demand of money. Hence, this paper examines the influence of expenditure in advertising (ADEX) towards the level of demand for money among the households in Russia. An approach known as Autoregressive distributed lag (ARDL) is opted to model the money demand function (MDF) of Russia and nine years of quarterly data from 2008 to 2016 have been used in the estimation. Empirical findings reveal that ADEX not only positively influences the Russian’s money demand in long term, its MDF also becomes more superior when the ADEX has been added. As such, this study suggests that ADEX can be taken into account as a non-traditional explanatory variable in the formulation of a stable and well-specified MDF for the case in Russia.
Examination of Test Anxiety in Samples of Australian and U.S. Higher Education Students
Authors: Lowe Patricia A.
Published: September 2019

Invariance testing and correlational analyses were conducted on a new test anxiety questionnaire, the Test Anxiety Measure for College Students (TAM-C), with 1.050 Australian and U.S. higher education students. The samples were administered the TAM-C along with other questionnaires. Results from the aforementioned analyses supported a modified six-factor structure for Australian students, U.S. students, males, and females and strong invariance across countries and across genders. Latent mean factor analyses found differences across countries and across genders on the questionnaire and validity evidence for the TAM-C scores in the Australian and U.S. student samples were found. Implications of the findings for counselors and researchers who work with Australian and U.S. undergraduates are discussed.
Evaluating University Students’ Inference Making Ability: A Study at Bachelor Level in Pakistan
Authors: Din Muhammad , Ghani Mamuna
Published: September 2019

Inference means the process of deriving a conclusion from a set of premises, including a conclusion that is probably in relation to the premises. This study has aimed to evaluate university students’ inference making ability. To explore this aim, the present study has set five research objectives which include to understand university students’ attitude towards critical thinking subset of making inferences, find out the relationship between university students’ attitude towards making inferences and their ability in making inferences, know whether critical thinking is a positive predictor for the overall score of critical thinking test (CTT), evaluate university students’ performance in exhibiting their attitude towards critical thinking and in critical thinking test (CTT) taken by them and understand the variance based on university students’ gender, location and medium of instruction in their attitude towards critical thinking inference and their ability of making inferences. To achieve these objectives, the researcher has used quantitative research methodology. The participants of this study consist of 550 male and female university students of different state-run colleges of Punjab (Pakistan). Critical thinking inventory (CTI) and Watson-Glaser’s Critical Thinking Appraisal (WGCTA) (2002) have been used to collect data from the subjects of the study. The researcher used SPSS (XX) to analyze the collected data. The findings of this study reveal that the university EFL leaners have highly positive attitude towards making inferences but their inference making ability does not correspond with their attitude toward inference making skill.
A Techno-Philosophical Perspective on How Acceleration Becomes Autopoietic
Authors: Liu Yu-cheng ,   Philosophy Documentation Center
Published: September 2019

This study examines mainly two subjects: “Why do we accelerate?” and “How does acceleration become autopoietic?” The answers to these questions may be derived from technical, social, or psychological approaches. However, they provide only an incomplete picture if a perspective from the philosophy of technology is not considered alongside. In addition to offering different viewpoints on the essence of technology, technics, or technē, this study will focus on the notion of distance as a key to answering the above questions. Conventionally, people usually understand that technology distances humans from nature. However, what does that mean? First of all, the idea of “nature” considered in this research refers to a distinction of non-nature/nature. A distinction implies a distance between both sides. Technology belongs to the side of non-nature, and creates a distance with the other side. The distance is getting enlarged when humans depend heavily on technology to reconnect humans to nature. In shortening or overcoming the distance, acceleration becomes autopoietic and leads to a paradox that can be unfolded only through accelerating more. In this study, technology is considered as a system functioning as simplification to create and to overcome alternately a distance with its environment, including nature. Through which technology not only acquires a tendency of acceleration, but also self-produces it. The development of writing tools from knots to tactile technology is investigated to provide a better understanding of the phenomenon of acceleration and its impact on humans and the world. In the end, it may be possible to think of a general theory of how acceleration becomes autopoietic.
2018 Mostly a Sideways Market Masking a Lot of Excitement: Innovation and Science Keep the Party Rolling
Authors: Gordon Edwin
Published: September 2019

Building science and technology-based organizations requires a reliable and steady stream of funding across the life cycle of the company. Along with building a good team, building a network of reliable and high value partners is essential. The financial community itself, however goes through periods of “ups and downs” and synchronizing financial strategy with reality can be challenging. Therefore, it is necessary to build and maintain a good understanding of the realities of the “state of the financial community” for access to capital and for exits such as M&A and IPOs. In this paper we provide a brief overview of the “state of the market” in 2018.
“The Good, the Bad, the Ugly”: Leadership Lessons From two Companies – Amgen and Theranos
Authors: Boni Arthur , Sammut Stephen
Published: September 2019

We review two books that provide perspective on leadership challenges and best practices for building successful companies. Lessons and frameworks are extracted from our reviews of recent books focused on two high-profile life science companies, Amgen and Theranos. Amgen, a pioneer in commercializing biotechnology was very successful, and along with Genentech set the standard for how to build and scale successful companies in the industry based on transformative life science technologies. Theranos, a more recent undertaking, illustrates a very high-profile company that pursued commercialization of a revolutionary diagnostic technology for blood testing with the promise of multi-purpose diagnostics obtained “from a single prick of blood”. Theranos has turned out to be anything but a success and as reported by Molly Brown at Geekwire (loc. cit.) is actually a “what not to do guide for startups”. We reprise and summarize materials previously published by one of us as a book review on Amgen (“Science Lessons: What I Learned about Management from Biotechnology”, by Gordon Binder and Phillip Bashe). Amgen serves as a role model for “the good” in building successful life science companies. Then, we provide a short review of the recent best seller on the Theranos story, titled “Bad Blood: Secrets and Lies in a Silicon Valley Startup” by John Carreyrou. In Theranos, the “bad and the ugly” are self-evident. Carreyrou’s excellent investigative reporting is highlighted in our review of that book, but as of this writing the story continues to unfold in the press and in the court system as a result of the alleged fraud from misrepresentation to investors, partners, and regulators by Theranos leadership. We use these two book reviews to highlight the 3Ps that comprise the ingredients for a successful company – the Problem (or opportunity), the People (leadership, ethics, culture) and the Processes (which are employed to validate the product/market fit incrementally prior to being able to exploit the full potential of the technology that underlies the platform and business model). The People dimension (team, leadership and culture, e. g. execution) is indeed critical to success, and we focus on that here.
Leading and Managing Teams in Entrepreneurial Organizations: an Experiential Perspective
Authors: Boni Arthur
Published: September 2019

This article focuses on summarizing best practices for leading and managing diverse teams in entrepreneurial companies. Our approach is to build on sound academic principles, but we focus on bringing in a strong experiential perspective based on extensive discussions with active venture capital investors in the Silicon Valley/Bay Area innovation ecosystem. A sidebar article summarizes these findings. A key observation is that the most important indicator of success in entrepreneurial ventures can be attributed to lack of leadership and team performance, with business model/market factors less important and technology failures even less of a factor. We highlight best principles for building and leading diverse, inclusive, agile teams appropriate for the biopharma and technology industries.
Plane Wave Coupling to a Transmission Line Above Ground with Terminating Loads
Authors: Warne L. K. , Campione S. , Coats R. S.
Published: September 2019

This paper considers plane wave coupling to a transmission line consisting of an aerial wire above a conducting ground. Simple circuit models are constructed for the terminating impedances at the ends of the line including radiation effects. We consider the following load topologies: open circuit, short circuit, and grounded rods. Results from the transmission line model with these loads show good agreement with full-wave simulations.
Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case
Authors: Groza A. D.
Published: September 2019

We investigate the TM-polarized nonlinear surface polaritons (NLSP) propagating along aguided structure consisting of a magnetic optically linear medium and a non-magnetic opticallynonlinear medium with saturable permittivity separated by a flat conductive layer of zerothickness. We consider those values of hosting media bulk material parameters for which theNLSP existence (for zero sheet conductance) has threshold character with respect to the wavesintensity. Based on the exact solution of Maxwell's equations we show that the energy andpropagation properties of the NLSP near the above-light-line condition (1 > n > 0) dependconsiderably on the surface conductivity of the layer, even the threshold character of the NLSPcan be lost; for certain sheet conductance values these waves can exist in a linear limit. TheNLSP propagation constant is defined by both the surface conductivity and field intensity andcan be varied in a wide diapason, which gives an opportunity to obtain and control the importantfor quantum information processing 0 n  condition. For a chosen value of the NLSPpropagation constant the NLSP field intensity and energy flux decries when the surfaceconductivity grows; saturation of the nonlinear permittivity leads to an increase of the NLSPenergy flux compared with Kerr-like nonlinearity.
A Novel Augmented Railgun Using Permanent Magnets
Authors: Heydari M. B. , Asgari M. , Gharib L. , Keshtkar A. , Jafari N. , Zolfaghari M.
Published: September 2019

A novel augmented railgun using a permanent magnet is proposed in this paper. The effects of the permanent magnet on the magnetic field and distribution of current density have been investigated. High current densities in the railguns can lead to high local temperature and erosion of the rails. Therefore, the current densities in the rails and armature should be decreased without the reduction of the Lorentz force which is required for acceleration. For this purpose, augmentation of the magnetic field can be used as an effective method. The Finite Element Method (FEM) simulations have been applied in this article to analyze the performance of the railgun in the presence of the magnets. Two augmented railgun structures have been introduced to produce a constant external magnetic field. For both structures, augmented railgun characteristics are studied in comparison to the railgun without the augmentation. The results show that augmentation with permanent magnet increases railgun efficiency, especially in low current railguns. For pulse current source I=30kA, Lorentz force of the augmented railgun with four magnets is 2.02 times greater than the conventional railgun.
Microwave Whispering-Gallery-Mode Photoconductivity Measurement of Recombination Lifetime in Silicon
Authors: Yurchenko V. , Navruz T. S. , Ciydem M. , Altintas A.
Published: September 2019

We present a whispering-gallery-mode resonance-enhanced microwave-detected photoconductivity-decay method for contactless measurement of recombination lifetime in highresistivity semiconductor layers. We applied the method to undoped Silicon wafers of high resistivity at 5 and 30 kOhm*cm and measured the conductivity relaxation times of 10 and 14 microseconds, respectively. In wafers being considered, they are supposed to be defined by the electron-hole diffusion from the bulk to the wafer surfaces.
Polarimetric Parameters of Scattered Radiation in the Magnetized Plasma
Authors: Jandieri G. , Ishimaru A. , Pistora J. , Lesnak M.
Published: September 2019

Second order statistical moments of scattered electromagnetic waves in the turbulent magnetized plasma slab with electron density fluctuations are calculated applying the modify stochastic smooth perturbation theory and the boundary conditions. The obtained results are valid for arbitrary correlation function of electron density fluctuations. Stokes parameters are analyzed both analytically and numerically. The theory predicts that depolarization effect caused by second Stokes parameter may be important in scintillation effects. Numerical calculations are carried out for new spectral function of electron density fluctuations containing both anisotropic Gaussian and power-law spectral functions using the experimental data. Polarimetric parameters are calculated for different anisotropy factor and inclination angle of elongated small-scale irregularities with respect to the magnetic lines of forces. The relationship between the scintillations and the polarimetric parameters is important.
Analysis of Current Distributions and Radar Cross Sections of Line Source Scattering from Impedance Strip by Fractional Derivative Method
Authors: Karacuha K. , Veliyev E. I. , Tabatadze V. , Karaçuha E.
Published: September 2019

In this paper, we have studied the analysis of current distributions and radar cross sections of line source scattering from impedance strip. The problem was solved with fractional derivative method previously. Here, the specific case of fractional derivative method is investigated. The problem under consideration on the basis of various methods is studied well, however, they are mainly done by numerical methods. The fractional derivative method, allows an analytical solution in a specific situation. This method allows to obtain analytical solution of impedance strip for a special case which is fractional order  is equal to 0.5. When fractional order is 0.5, there is an analytical solution which is explained and current distribution, radar cross section and near field patterns are given in this paper. Here, as a first time, current distribution, bi-static radar cross section and near field for the upper and lower part of the strip are studied.
Wavelet Based Denoising of the Simulated Chest Wall Motion Detected by SFCW Radar
Authors: Acar Y. E. , Seflek I. , Yaldız E.
Published: September 2019

Low power and compact radars have emerged with the development of electronic technology. This has enabled the use of radars in indoor environments and the realization of many applications. The detection, tracking and classification of human movements by radar are among the remarkable applications. Contactless detection of human vital signs improves the quality of life of patients being kept under observation and facilitates the work of experts. In this study, it was simulated that the movement of the chest wall was modeled and detected by the SFCW radar. Gaussian, Rician and uniformly distributed random noise types were added to the modeled chest motion at different levels. The noisy signal obtained at the receiver is denoised with different mother wavelet functions and the performances of these functions are presented comparatively.
Application of the Shifted Frequency Internal Equivalence to Two Dimensional Lossy Objects
Authors: Aydemir B. , Köksal A.
Published: September 2019

Performance of a new method, Shifted Frequency Internal Equivalence (SFIE) is studied in the analysis of scattering from two dimensional lossy objects. This method finds the solution of a wideband scattering problem faster than classical approaches.By introducing conductivity, loss shows itself as imaginary electrical permittivity. Changing conductivity also changes the distribution of electromagnetic waves and modifies RCS plots. In this study homogeneous and inhomogeneous conductive media are investigated to widen the usage of SFIE method. By increasing conductivity skin effect phenomenon is observed, electrical dimensions are decreased and RCS plots are flattened as expected.Numerical results obtained by SFIE are compared to the ones obtained by Method of Moments and the differences are shown.
The Effect of Error Propagation on the Performance of Polar Codes Utilizing Successive Cancellation Decoding Algorithm
Authors: Gazi O. , Andi A. A.
Published: September 2019

In this paper, we discuss and analyze the effect of error propagation on the performance polar codes decoded using the successive cancellation algorithm. We show that error propagation due to erroneous bit decision is a catastrophic issue for the successive cancellation decoding of polar codes. Even a wrong decision on a single bit may cause an abundance of successor bits to be wrongly decoded. Furthermore, we observe that the performance of polar codes is significantly improved if even single bit errors are detected and corrected before the decoding of successor bits.
Novel Design of Slotted Waveguide Phased Array Antenna
Authors: Elhefnawy M. , Al-Hadi A. A.
Published: September 2019

A novel design of phased array antenna based on a Slotted Waveguide Antenna Array (SWAA) is introduced in this paper. The CST Microwave Studio simulation results show that the S‒parameters, the gain, the axial ratio, and the beamwidth of the proposed phased array antenna are affected by the value of the progressive phase shift. The simulated results of the proposed phased array antenna at different values of progressive phase demonstrate that the S‒parameters for almost all ports are less than ‒10 dB over at least 2% bandwidth, the simulated phased array antenna gain is above 17 dB in the frequency range from 9.5 GHz to 9.7 GHz, the range of frequencies over which the simulated Axial Ratio (AR) is below 3 dB is not fixed and varied according to the selected progressive phase, the simulated beamwidth can be 6.5˚ or narrower based on the value of the progressive phase shift.
Compact and Low Loss Microwave Idlers for Low Frequency Integrated Circuits
Authors: Singh S. , Bera S. C. , Pujara D.
Published: September 2019

Two design methodologies for realization of low frequency (less than 20 GHz) compact and low loss microwave idlers have been proposed in this paper. Such idlers can be used for realizing low frequency higher order (6X or more) harmonic mixers or multipliers on monolithic integrated technology. Low frequency higher order harmonic mixers or multipliers are generally avoided due to higher losses and board space consumed by multiple idlers. The present proposed methods of idler design are based on realization of idlers by combining distributed microstrip transmission line and lumped components. The approach helps in transmitting the desired frequency with lower insertion loss and providing more rejection to the undesired frequencies. The design proposal has been demonstrated by designing an idler for 3 GHz LO side of a 6X harmonic MMIC mixer. This mixer utilizes 6th harmonic of the 3 GHz LO for generating 18 GHz output RF signal by frequency mixing. The idler for 3 GHz LO rejects dc, IF and selective even harmonics of LO; 6 GHz, 12 GHz and 18 GHz. On wafer test results of the developed 6X harmonic MMIC mixer has substantiated the idler design.
An Inherent Limitative Parameter in Spoofing GNSS-Based Navigation Clients
Authors: Esmaeilkhah A.
Published: September 2019

Deception of navigational subsystems of a client, ranging from a hunting GPS receiver to the military-class GNSS receiver onboard of a Cruise Missile, is one of the probable electronic attacks. One of the simplest and practical way too deceive these receivers is to re-broadcast the delayed navigational signals. The authors were studied the feasibility of this method in the “Best” attainable conditions while the generality of study retained. The results from introduced geometrical and mathematical models were used to define the minimum and maximum operational range of Repeater Deception System parametrically. Then the parameters were substituted by information of various GNSS constellations. Investigation of reliability of selected EW scenario concluded the article.
Dual Band Notched UWB MIMO Antenna for Surfaces Penetrating Application
Authors: Chaabane A. , Babouri A.
Published: September 2019

This paper introduces a novel compact planar Ultra-Wideband (UWB) Multiple-Input-Multiple-Output (MIMO) antenna with dual-band notched performance for Surfaces Penetrating (SP) application. To avoid interference from co-existing systems, two notched bands are introduced by including strips inside the radiating patches. The two ports MIMO antenna is printed on the low-cost FR4 substrate having a compact size of 56×32.47×1.5 mm3. The measured results indicate that the −10 dB bandwidth of the proposed MIMO antenna covers a wide bandwidth from 1.57 GHz to 12.4 GHz (155.05%) with dual-band rejection (2.04 GHz – 3.98 GHz and 4.8 GHz – 6.22 GHz). The effects of numerous construction and decoration surfaces on the antenna’s reflection coefficients are measured. Gypsum, White Portland Cement, Slate, Marble, Wood and Reinforced Concrete were tested. A good penetrating capability is measured which confirms the aptitude of the proposed MIMO antenna to work as SP antenna.
T-Shaped Compact Dielectric Resonator Antenna for UWB Application
Authors: Zitouni A. , Boukli-Hacene N.
Published: September 2019

In this article, a novel T-shaped compact dielectric resonator antenna for ultra-wideband (UWB) application is presented and studied. The proposed DRA structure consists of T-shaped dielectric resonator fed by stepped microstrip monopole printed antenna, partial ground plane and an inverted L-shaped stub. The inverted L-shaped stub and parasitic strip are utilized to improve impedance bandwidth. A comprehensive parametric study is carried out using HFSS software to achieve the optimum antenna performance and optimize the bandwidth of the proposed antenna. From the simulation results, it is found that the proposed antenna structure operates over a frequency range of 3.45 to more than 28 GHz with a fractional bandwidth over 156.12%, which covers UWB application, and having better gain and radiation characteristics.
Dielectric Behavior of Medical PMMA Polymer Filled With Copper Nanobud Particles
Authors: Marhoon I. I. , Majeed A. H. , Abdulrehman M. A.
Published: September 2019

In this paper, the effect of weight fraction and frequency on dielectric properties of polymethylmethacrylate filled with copper nanobud particles is studied. copper nano particles were synthesized by chemical reduction method. The resultant copper nano particles were characterized by UV-Vis spectroscopy and X-ray diffraction (XRD). Results show that the Cu Nps have bud shapes, and their average particle size obtained from the XRD study is 53.78 nm. For the resultant composite materials, such as the dielectric behavior of composite materials reinforced with 5%, 10%, 15%, and 20% weight fractions of copper nanobud particles and frequency ranges of 50, 250, 103, 104, 105, and 106 Hz at 25 °C were investigated. Results reveal that the dielectric constant, dielectric loss factor, and dissipation factor increased with the increase in weight fraction of copper nanobud particles due to their high conductivity. The dielectric constant, dielectric loss, and dissipation factor decreased with the increase in frequency.