Available techniques in hadoop small file issue

Hadoop is an optimal solution for big data processing and storing since being released in the late of 2006, hadoop data processing stands on master-slaves manner [1] that’s splits the large file job into several small files in order to process them separately, this technique was adopted instead of pushing one large file into a costly super machine to insights some useful information. Hadoop runs very good with large file of big data, but when it comes to big data in small files it could facing some problems in performance, processing slow down, data access delay, high latency and up to a completely cluster shutting down [2]. In this paper we will high light on one of hadoop’s limitations, that’s affects the data processing performance, one of these limits called “big data in small files” accrued when a massive number of small files pushed into a hadoop cluster which will rides the cluster to shut down totally. This paper also high light on some native and proposed solutions for big data in small files, how do they work to reduce the negative effects on hadoop cluster, and add extra performance on storing and accessing mechanism

Lograr la recuperación del servicio a través de la innovación del servicio: El papel crítico del empoderamiento del empleado

Research in service recovery and service innovation has attracted significant attention in recent years but few studies have focused on achieving service recovery through service innovation. The current study aims to bridge this gap in research – to investigate the effect of service innovation on service recovery. Additional emphasis is also given to examining whether employee empowerment serves as a mediator between service innovation and service recovery in the hotel industry. A quantitative survey method was applied by using a 60-item questionnaire and data collected from a sample of 381 employees from five-star hotels in Jordan. The findings confirmed the hypotheses, revealing a direct effect of service innovation on employee empowerment which, in turn, had a significant influence on service recovery. Additionally, this study proposed a model of influence of service innovation in service recovery, whereby employee empowerment fully mediates this relationship. The current study contributes to the existing literature on service innovation and service recovery as it identifies the role of service innovation in enhancing service recovery performance in hotelsLa investigación en recuperación de servicios e innovación de servicios ha atraído una atención significativa en los últimos años, pero pocos estudios se han centrado en lograr la recuperación de servicios a través de la innovación de servicios. El presente estudio tiene como objetivo cerrar esta brecha en la investigación, para investigar el efecto de la innovación de servicios en la recuperación de servicios. También se hace hincapié en examinar si el empoderamiento de los empleados sirve como mediador entre la innovación y la recuperación del servicio en la industria hotelera. Se aplicó un método de encuesta cuantitativa utilizando un cuestionario de 60 ítems y datos recopilados de una muestra de 381 empleados de hoteles de cinco estrellas en Jordania. Los hallazgos confirmaron las hipótesis, revelando un efecto directo de la innovación en el servicio sobre el empoderamiento de los empleados que, a su vez, tuvo una influencia significativa en la recuperación del servicio. Adicionalmente, este estudio propuso un modelo de influencia de la innovación en el servicio en la recuperación del servicio, en el que el empoderamiento de los empleados media plenamente en esta relación. El estudio actual contribuye a la literatura existente sobre innovación de servicios y recuperación de servicios, ya que identifica el papel de la innovación de servicios en la mejora del desempeño de recuperación de servicios en hotele

The effect of COVID-19 vaccine tele-educational program on vaccine hesitancy and receiving the vaccine among women planning for pregnancy, pregnant or breast-feeding mothers.

BackgroundCOVID-19 hesitancy among women planning to become pregnant, who are pregnant, and who are breast-feeding is still a global phenomenon. Unfortunately, there is a lack of national educational programs that provide those groups of people with the information they need about the vaccine.ObjectiveThis study investigated the effect of the COVID-19 vaccine tele-educational program on vaccine hesitancy and receiving the vaccine among women planning for pregnancy, pregnant and breast-feeding mothers.MethodsThis study implemented a quasi-experimental pre-post design and was conducted in Jordan. It was a two-time study and had two groups of women; 220 women participated in the control group, and 205 women participated in the intervention group (those received the tele-educational program). All participating women answered the demographic characteristics sheet and the Arabic version of Hesitancy About COVID-19 Vaccination Questionnaire twice.ResultsResults showed that after conducting the program the interventional group reported significantly higher vaccination rate and lower mean score of hesitancy than the control group (M = 24.67, SD = 5.11; M = 27.45, SD = 4.92; respectively) t (423) = -4.116, p-value ConclusionsThe study concluded that awareness of pregnant women after being given the tele-education program about COVID-19 vaccination decreased their hesitancy and improved their willingness to participate in the COVID-19 vaccination. Therefore, health workers should focus on providing scientific-based information about the vaccine to reduce the doubts of pregnant women about participating in the COVID-19

The effect of COVID-19 vaccine tele-educational program on vaccine hesitancy and receiving the vaccine among women planning for pregnancy, pregnant or breast-feeding mothers

Background COVID-19 hesitancy among women planning to become pregnant, who are pregnant, and who are breast-feeding is still a global phenomenon. Unfortunately, there is a lack of national educational programs that provide those groups of people with the information they need about the vaccine. Objective This study investigated the effect of the COVID-19 vaccine tele-educational program on vaccine hesitancy and receiving the vaccine among women planning for pregnancy, pregnant and breast-feeding mothers. Methods This study implemented a quasi-experimental pre-post design and was conducted in Jordan. It was a two-time study and had two groups of women; 220 women participated in the control group, and 205 women participated in the intervention group (those received the tele-educational program). All participating women answered the demographic characteristics sheet and the Arabic version of Hesitancy About COVID-19 Vaccination Questionnaire twice. Results Results showed that after conducting the program the interventional group reported significantly higher vaccination rate and lower mean score of hesitancy than the control group (M = 24.67, SD = 5.11; M = 27.45, SD = 4.92; respectively) t (423) = -4.116, p-value Conclusions The study concluded that awareness of pregnant women after being given the tele-education program about COVID-19 vaccination decreased their hesitancy and improved their willingness to participate in the COVID-19 vaccination. Therefore, health workers should focus on providing scientific-based information about the vaccine to reduce the doubts of pregnant women about participating in the COVID-19

Artificial semi-rigid tissue sensitized with natural pigments: Effect of photon radiations

Background: A new approach for evaluating the optical penetration depth and testing its validity with Monte Carlo simulations and Kubelka-Munk theory is used for artificial semi-rigid tissue sensitized with natural pigments. Photodynamic therapy is a promising cancer treatment in which a photosensitizing drug concentrates in malignant cells and is activated by visible light at certain wavelength. Materials and Methods: Cheap artificial semi-rigid tissue incorporated with scattering and absorbing materials along with some other composites comparable to normal human tissue has been performed. The optical parameters as measured with different conditions and calculated with various techniques are investigated. Results: The probability of interaction of light with tissue is very high when exposed to light in presence of Cichorium pumilum and RBCs followed by photohemolysis or/and photodegradation. The optical penetration depth calculated by linear absorption coefficient ranges from 0.63 to 2.85 mm is found to be comparable to those calculated using Kubelka-Munk theory or Monte Carlo simulation (range from 0.78 to 2.42 mm). The ratio of absorption to the scattering is independent of thickness and decreases with increasing irradiation time. Moreover, the optical parameters as well as their ratios are in very good agreement in the two approaches of calculation. The values of absorption and scattering coefficients are independent of thickness. Furthermore, the average photon ranges in the samples containing no scattering and absorbing materials are about three times greater than those samples containing scattering materials. Conclusion: Our results suggest that light propagation with optical properties presented in this work could be applicable in diagnostic and therapeutic of the human biological tissue for photodynamic therapy