No abstract

As cities continue to grow, numerous initiatives for Smart Cities are being conducted. The concept of Smart City encompasses several concepts being governance, economy, management, infrastructure, technology and people. This means that a Smart City can have different communication needs. Wireless technologies such as WiFi, ZigBee, Bluetooth, WiMax, 4G or LTE (Long Term Evolution) have presented themselves as solutions to the communication needs of Smart City initiatives. However, as most of them employ unlicensed bands, interference and coexistence problems are increasing. In this paper, the wireless technologies available nowadays for IoT (Internet of Things) in Smart Cities are presented. Our contribution is a review of wireless technologies, their comparison and the problems that difficult coexistence among them. In order to do so, the characteristics and adequacy of wireless technologies to each domain are considered. The problems derived of over-crowded unlicensed spectrum and coexistence difficulties among each technology are discussed as well. Finally, power consumption concerns are addressed. 24 As the initiatives taken to turn a city into a smart city may be varied and have different requirements, employing one unified technology throughout the city may not be efficient. Although wired solutions present a reliable channel to transmit data, the cost of deploying a wired network that connects all devices is extremely high and the result would be considerably inefficient. Wireless technologies have presented themselves as a solution to the rapid growth of devices that are connected to the network as well as the increasing demand of services that allow monitoring cities. IoT is gaining rapid popularity and it is being utilized for transport, health, environment, animal monitoring and smart metering applications [4,5]. Wireless Sensor Networks (WSN) are being employed all over the world as a low-cost and low-energy consuming method to provide a communication mechanism [6]. However, wireless technologies are varied and their utilization should be considered depending on the application. Traffic type, distance, energy consumption or number of nodes are some of the factors that should be considered when deciding how to transmit the gathered data. Moreover, the abuse of wireless technologies may derive in some problems.The majority of the wireless technologies available nowadays employ the 2.4 GHz ISM (Industrial, Scientific and Medical) band. It has not been a great problem until wireless devices started growing at a fast pace. Cable connections between computers and peripherals are being replaced by technologies such as Bluetooth [7]. It is also being employed by home automation systems or telemedicine applications [8]. ZigBee is popular for monitoring systems where a great number of nodes and low energy consumption are required. Services that require interaction with humans are usually utilized with PCs, smartphones or tablets, such as Ambient Assisted Living (AAL) and healthcare systems, and employ WiFi or mo...

El ciberacoso ha surgido recientemente como una nueva forma de acoso escolar que se lleva a cabo en el ciberespacio, convirtiéndose en un importante problema psicosocial y generando un gran impacto sobre aquellos adolescentes que lo sufren. Ser víctima de ciberacoso puede crear un importante desajuste emocional y psicológico, afectando a áreas tan importantes como la satisfacción vital (SV). La presente investigación presenta dos objetivos: analizar las relaciones entre cibervictimización, inteligencia emocional (IE) y SV; y examinar la IE como una posible variable mediadora en la relación entre la cibervictimización y la SV. La muestra estaba formada por 731 estudiantes de Educación Secundaria Obligatoria, Bachillerato y Formación Profesional. Los participantes cumplimentaron tres escalas: la escala Wong and Law Emotional Intelligence Scale (WLEIS) para medir los niveles de IE; la escala European Cyberbullying Intervention Project Questionaire (ECIP-Q) para conocer los niveles de ciberacoso; y la escala Satisfaction with life Scale (SWLS) para medir los niveles de SV. Como se esperaba, los análisis de correlación mostraron que la IE se relacionaba de forma positiva y estadísticamente significativa con la SV y que la cibervictimización se asociaba de forma negativa y estadísticamente significativa con la IE y la SV. Además, los resultados del análisis de mediación indicaron que la IE (percepción intrapersonal) mediaba parcialmente la relación entre la cibervictimización y la SV. Finalmente, se reflexiona sobre las implicaciones de esta investigación, tanto a nivel teórico como práctico.

No abstract

We have observed that BCC on the nasolabial fold, despite presenting with better clinical and histological features, needed more complicated surgery. In our opinion, this location warrants a particular attention and further prospective studies should be made to corroborate our findings.

References1 Friboes W. Beitrag zur Klinik und Histopathologie der gutartigen Hautepitheliome . S. Karger-Verlag, Berlin, 1912. 2 Kleine-Natrop HE. Simultaneous generalization of benign basalioma of both Spiegler and Brooke types. Arch Klin Exp Dermatol 1959; 209 : 45 -55. 3 Volter C, Baier G, Schwager K et al. Cylindrocarcinoma in a patient with Brooke-Spiegler syndrome. Laryngorhinootologie 2002; 81 : 243 -246. 4 Durani BK, Kurzen H, Jaeckel A et al. Malignant transformation of multiple dermal cylindromas. Br J Dermatol 2001; 145 : 653 -656. 5 Pizinger K, Michal M. Malignant cylindroma in Brooke-Spiegler syndrome. Dermatology 2000; 201 : 255 -257. 6 McKee PH, Fletcher CD, Stavrino P, Pambakian H. Carcinosarcoma arising in eccrine spiradenoma. Am J Dermatopathol 1990; 12 : 335 -343. 7 Grouls V, Iwaszkiewicz J, Berndt R. Malignes ekkrines Spiradenom. Z Hautkr 1991; 66 : 892-895. 8 Meriggi F, Tagliabo R, Morone G et al. The potential malignancy of eccrine spiradenoma. Ital J Surg Sci 1989; 19 : 265 -268. 9 Biernat W, Peraud A, Wozniak L, Ohgaki H. P53 mutations in sweat gland carcinomas. Int J Cancer 1998; 76 : 317 -320. 10 Mutoh H, Nagata H, Ohno K et al. Analysis of the p53 gene in parotid gland cancers: a relatively high frequency of mutations in low-grade mucoepidermoid carcinomas. Int J Oncol 2001; 18 : 781-786. References 1 Hull PR, D'Arcy C. Isotretinoin use and subsequent depression and suicide: presenting the evidence. Am J Clin Dermatol 2003; 4: 493 -505. 2 Bremner JD. Does isotretinoin cause depression and suicide? Psychopharmacol Bull 2003; 37: 64 -78. 3 O'Connell KA, Wilkin JK, Pitts M. Isotretinoin (Accutane) and serious psychiatric adverse events. J Am Acad Dermatol 2003; 48: 306 -308. 4 Chu A, Cunliffe WJ. The inter-relationship between isotretinoin/ acne and depression. J Eur Acad Dermatol Venereol 2003; 17: 619. 5 Gupta MA. Incidence of psychiatric disorders in dermatological patients. J Eur Acad Dermatol Venereol 2003; 17: 624 -626. 6 Jacobs DG, Deutsch N, Brewer M. Suicide, depression, and isotretinoin: is there a causal link? J Am Acad Dermatol 2001; 45: S168 -S175. 7 Wysowski DK, Pitts M, Beitz J. An analysis of reports of depression and suicide in patients treated with isotretinoin. J Am Acad Dermatol 2001; 45: 515 -519. 8 Jick SS, Kremers HM, Vasilakis-Scaramozza C. Isotretinoin use and risk of depression, psychotic symptoms, suicide, and attempted suicide.

No abstract

No abstract