expectation”. It can be seen that nearly 80% of college students were full of expectations for mental health courses, indicating that they recognize and accept the establishment of such courses. Among the 10 indicators, the expected values were ranked from high to low, respectively: course content, teaching methods, teacher level, teacher attitude, teaching evaluation, teaching devices, teaching effects, curriculum value, teaching material selection, teacher-student interaction, as shown in Table 3. The survey data in Table 3 intuitively shows that the designed course helps to learn about the learning objects; each classification indicator was divided into the expected value and satisfaction value, and the assignments were used for ranking reference. The scoring of satisfaction degree can provide a basis for the improvement and implementation of course design, help to timely adjust the problems of student learning, and be beneficial to interactive teaching and enhance students' interest in learning.
The landscape of public gardens should promote the harmony between human and nature. Based on the theory of landscape ecology, this paper studies the relevance between landscape designand landscape aesthetics of public gardens, and evaluates the aesthetic preference of the public on the landscape design of public gardens. The research data were collected via a questionnaire survey on 30 volunteers with artistic professional background and analysed statically with a 100-point scale. The results show that the landscape of public gardens in China falls into four layers; the creation of the landscape aesthetics is a compound rather than a single aesthetic feeling; the application of landscape aesthetics in landscape design provides improves the viewers’ adaptability to the environment, and reduces the loss of energy and ecological burden; the landscape structure hierarchy of a public garden has a positive impact on the landscape aesthetics, and the preference evaluation of viewers. The research results provide a theoretical basis for improving the aesthetic design of landscape of public gardens.
The finite difference of temperature component is relevant in the equipment second law perfor- mance. As it is shown in the section 3.2.3, operating conditions were established with a maximum temperature difference between fluids of 20K, regardless of the situation to be analyzed. How- ever, depending on the type of connection selected, this difference occurs at the inlet of PHX in φ = 1 and φ = 2 cases, with a low reduction rate for φ = 2 about the increase in the size of the equipment, as seen on figures 3-6 (a) and 3-6 (c). For φ = 3 configuration, thermal shock is the least of all, since the temperature difference of 20K does not occur for the steady state operation, because fluids are countercurrent and have already traveled a certain distance inside the heat ex- changer as seen in Fig. 3-2 (c). For this reason, dimensionless entropy generation is the lowest for φ = 3. In the current liquid-liquid application pressure drops has its greatest influence when high channel velocity equipment are analyzed. When S ∗ is measured on that PHX, they have greater generation rate than those with the lower velocities, but it does not greatly affects fluid properties. On the other hand, when multiphase or gas applications are required, pressure drop will affect the fluid properties additionally and it have to be taken into account in a rigorous way.
Abstract: The designandevaluation of a stand-alone photovoltaic system for well pumping in agricultural application is presented. Given environmental (irradiance and ambient temperature), system (PV and battery technology, array geometry) and load (monthly daily demand) data, the optimal size of main components of PV systems are obtained by a sizing algorithm; specifically the output are: the surface of PV array and the battery pack capacity. The decision is made based on the estimated power generation, the required power for the load, the water needed by the crops and the battery requirements. The proposed design is then evaluated using yearly simulations, on hourly base, performed by a specialized commercial software, named PVSyst, to show that the proposed optimal size ensures also a high reliability evaluated by two indices: number of autonomous days (NAD) and Loss of Load Probability (LOLP).
Table 1 shows the academic results in a scale from 0 to 10 (being 10 the highest qualification) for the traditional Internet Security course for the year 2010/2011 (IS) and the new Information Systems Security version of the course for the year 2011/2012 (ISS). The results are divided into two different parts: cryptography and system security. Total scores are also included for the sake of completeness. The results were found to be significantly different with p < 0.05. We can see that the results for ISS students are significantly better than the IS ones. In addition, the main differences are observed in the system security part, which backups the hypothesis that it is the difference in the methodology (i.e. the use of NEMESIS) the factor causing the improvement, and not a bias on students’ abilities. From the teacher’s perspective, using NEMESIS provided a much more flexible and easy way to designand deploy lab scenarios, which allowed to provide more realistic lab assignments to the students. Another proof of the flexibility and ease of use of the platform is that we ask for some master thesis students to design scenarios for security labs, and they came up with high quality scenarios in a fairly reasonable time. We plan to include these scenarios as optional lab assignments in future editions of the course.
Exploiting particular features of the new design, we have added three mechanisms to DualFS which are aimed at improving its performance even more. These mechanisms are: directory affinity, meta-data prefetching, and on- line meta-data relocation. The first mechanism reduces the number of seeks in the data device, and therefore the time taken by data read/write operations. The second one improves meta-data read operations which in turn allows DualFS to improve the read of regular files. In order to be I/O-time efficient (and to avoid extra I/O requests which can produce long seeks), prefetching is carried out when the file system starts a disk I/O request for reading a meta- data block which is not in memory; DualFS prefetching also involves reading a group of consecutive meta-data blocks from disk where it is the requested meta-data block. Finally, the third method is used to avoid degradation of prefetching efficiency by increasing spatial and temporal locality in the meta-data device. This is obtained by putting together on disk all meta-data blocks of a file, and meta-data blocks of files which are read at the same time.
This paper describes the use of concrete electrical resistivity as durability performance parameter and the complementary information that resistivity can provide like: setting period, mechanical strength and degree of curing. Also, it is explained how to design the concrete mix to obtain a target resistivity. Current codes have prescriptive requirements for the durability of concrete and reinforcement corrosion. However, modern trends specify the performance rather than the concrete characteristics. This performance approach demands to define a durability controlling parameter, such as the chloride diffusion coefficient, with its corresponding test and the model to predict the time to steel corrosion. Keywords: concrete electrical resistivity; durability performance; chloride diffusion coefficient.
were exposed in the user study. The gesture recognition does not introduce significant delay in the gesture input workflow and the task duration with gestures is comparable to the one with voice. Finally, several design recommendations on gesture delimiters, gesture recognition, grammars, user interface and application design are proposed in the discussion of the results. The training with the three technologies by performing 10 gestures (or more if any gesture was repeated because it was not performed well) was relatively short, with average training time as long as 69s (the Kinect) and as short as 34s (the Phone). The Phone had significantly shorter time than the Kinect and the Watch and this is consistent with the results obtained from the comparison of the gesturing time using the three technologies. In the subjective ratings and comments for the training, the Phone interface was considered more natural than the one for the Watch, easier to use than the one for the Kinect and the Watch, being preferred by the majority of the participants. The main activities in the training were gesture performance and data capture so the main difference between applications on the three technologies were the gesture input procedure design. The positive results of the Phone-based application, from both objective and subjective evaluations, indicate that the design of the gesture input procedure is better than the one for the other two. The design recommendations on gesture delimiters in Chapter 5.4 are based on the comparison between the applications of the three technologies.
This paper describes the use of concrete electrical resistivity as durability performance parameter and the complementary information that resistivity can provide like: setting period, mechanical strength and degree of curing. Also, it is explained how to design the concrete mix to obtain a target resistivity. Current codes have prescriptive requirements for the durability of concrete and reinforcement corrosion. However, modern trends specify the performance rather than the concrete characteristics. This performance approach demands to define a durability controlling parameter, such as the chloride diffusion coefficient, with its corresponding test and the model to predict the time to steel corrosion.
SUMMARY. The aim of the current study was the design, development and optimization of oral immediate release solid dosage forms of gliclazide tablets, intended for rapid action within 30 min, formulated and optimized by in vitro drug release method comparing with reference tablet Diamicron (Servier Lab.). For fast breakdown and rapid dissolution of tablets three different disintegrants (sodium starch glycolate, kol- lidone CL, and dried maize starch) were used with same percentage (2 %) in the formulations; sodium starch glycolate provide very fast release of gliclazide from tablets in pH 7.4. Two different compression methods, direct compression and wet granulation, were employed in the study. The in vitro drug release profile was better for directly compressed gliclazide tablets, but the flow properties of gliclazide were very poor, which causes high weight variation. Wet granulation method provided tablets of good physical pa- rameters: two types of tablets with different hardness (8-10 kg/cm 2 and 5-7 kg/cm 2 ) were prepared to ob-
MatLab is a computational tool that allows you to work with the simulink toolbox, which offers a large library for design, analysis and signal processing. The simulink toolbox is used for the design, analysis andevaluation of the methodology proposed for the RoF system under linear and non-linear effects using the DWDM technique; where the methodology is represented in blocks as shown in figure 2 and then the operation of each block is broken down using the libraries offered by the simulink toolbox , .
En el art´ıculo Evaluating the Good Ontology Design guideline (GoodOD) with the Ontology Quality Requirements andEvaluation method and metrics (OQuaRE) se aplica el framework OQuaRE para evaluar un grupo de on- tolog´ıas desarrolladas por un grupo de estudiantes, antes y despu´es de ser entrenados con la gu´ıa para desarrollo de buenas ontolog´ıas Good Ontology Design Guideline (GoodOD), la cual ha sido dise˜nada por un grupo de exper- tos en construcci´on de ontolog´ıas. Inicialmente, se dise˜n´o el experimento y se calcularon las m´etricas de calidad de OQuaRE, se realiz´o el estudio compa- rativo de los estudiantes entrenados y no entrenados, por medio de pruebas estad´ısticas como ANOVA bifactorial, an´alisis de componentes principales y an´alisis de cl´uster. Luego se procedi´o a comparar los resultados con los obtenidos en dos evaluaciones previas, Competency Questions y Gold Stan- dard, realizadas por los desarrolladores de la gu´ıa. Los resultados mostraron la utilidad de OQuaRE para la evaluaci´on de ontolog´ıas desarrolladas siguiendo buenas pr´acticas. Adem´as, se mostr´o que OQuaRE aporta m´as informaci´on sobre la calidad de las ontolog´ıas evaluadas que otros m´etodos de evaluaci´on y, adem´as, permite comparar ontolog´ıas.
Abstract—This paper describes the designandevaluation of a new platform created in order to improve the learning experience of bilateral control algorithms in teleoperation. This experimental platform, developed at Universidad Politécnica de Madrid, is used by the students of the Master on Automation and Robotics in the practices of the subject called “Telerobotics and Teleoperation”. The main objective is to easily implement different control architectures in the developed platform and evaluate them under different conditions to better understand the main advantages and drawbacks of each control scheme. So, the student’s tasks are focused on adjusting the control parameters of the predefined controllers and designing new ones to analyze the changes in the behavior of the whole system. A description of the subject, main topics and the platform constructed are detailed in the paper. Furthermore, the methodology followed in the practices and the bilateral control algorithms are presented. Finally, the results obtained in the experiments with students are also shown.
Overall, this project was able to fulfil the general objective set. By understanding a water flat plate photovoltaic-thermal solar collector through its design, manufacture and experimental evaluation, it was concluded that variables which influence the generation of useful energy are flow rate, temperature difference between the inlet and outlet, incident solar radiation and ambient temperature, mainly. Furthermore, the functioning principle of the hybrid collector was proved to be true: by integrating a photovoltaic generator to a solar thermal collector, heat lost to the environment is recovered by the solar thermal unit while, at the same time, electrical output increases.
Abstract. The paper presents the designandevaluation of R-Zoom, a focus+context information visualization technique. R-Zoom was designed to deal with large sets of items with specific structural properties (sequential order, heterogeneous sizes), and behavior requirements (flexible interaction, maximizing screen space, minimizing changes in screen). It was evaluated and compared to an overview+detail interface with 43 participants. Experienced users of R-Zoom completed tasks faster and with fewer errors than users of the overview+detail interface. Furthermore, a satisfaction questionnaire showed that users felt more comfortable with R-Zoom.
This thesis describes the design, implementation andevaluation of FPGA Architecture of a Digital ANN (Artificial Neural Networks) by using four components: data memory, weights memory, neuron module, and control unit. All these components have a generic orthogonal structure in order to facilitate automatic generation from specific parameters. In a particular ANN design all of its components are generated with specific size, depending on two types of parameters: A) Topological (number of inputs and number of hidden neurons) will determine the size of the memories, the neuron processing time and the microprogram size. B) Architectonic (i.e. word size in bits and circuit granularity) will determine the precision of the results and the final ANN performance.
Nielsen’s third heuristic has to do with offering an “undo” function which is not relevant to games, but the concepts of user control and freedom are still important to game design. If the user feels restricted, they will most likely become frustrated, and the result can be disinterest in the game (Norman, 1990). Therefore, the user needs to feel that they are in control not only of the actual moveme nts of the character, but the manner in which they explore their environment. In order for the player to feel in control of the actions occurring on the screen, their actions need to be responded to within 0.2 seconds (Bickford, 1997, p. 179). One easy way to offer users additional control is to allow them to reset their input device so that the buttons function in the way they are most comfortable with. Players should also be given the ability to save games at different states, which gives them the freedom to explore the game at the time and pace of their choosing.
Since the creation of the Internet, its massive use, especially in developed countries, has generated new forms of technology in almost every aspect of life . One of these aspects is health care; Internet technologies have initiated major advances in telemedicine and telehealth, now present in every modern health care organization . In the field of telehealth, eHealth has arisen as a paradigm involving the concepts of health, technology, and commerce, with commerce and technology as tools in the service of health . Chang Liu et al (2011) perceive eHealth applications as the software applications that provide tools, processes, and communications in order to support electronic health care practice . In addition to this, with the advent of wireless communications, there are no longer barriers of space and time between health care providers and patients . The use of new wireless communications technology, such as mobile telecommunications networks (2.5G, 3G, 4G, HSPA+), Wireless Local Area Networks (WLAN), Wireless Personal Area Networks (WPAN) including Bluetooth and ZigBee, Wireless Body Area Network (WBAN), Wireless Sensor Networks (WSN), Radio-frequency Identification (RFID), and Worldwide Interoperability for Microwave Access (WiMAX), has greatly boosted telemedicine and eHealth [5-12]. In this context and thanks to these advances in communications, a new term arises: mHealth, a component of eHealth. The Global Observatory for eHealth (GOe) of the World Health Organization (WHO) defines mHealth or mobile health as “medical and public health practice supported by mobile devices, such as mobile phones, patient monitoring devices, personal digital assistants (PDAs), and other wireless devices” . While new wireless technologies were being developed, new mobile devices were being created. In this way, PDAs, tablets, and smartphones appeared on the market. Although PDAs experienced a boom in the 1990s and early 2000s, they have been replaced by smartphones and tablets with new functions and utilities, which are common now in developed countries . There are already more than 1.08 billion smartphones of a total of 5 billion mobile phones around the world, with 80% of the population having a mobile phone . Regarding tablets, International Data Corporation (IDC) conducted research on their shipments showing 70.9 million shipments of tablets worldwide in 2011 and an estimated 117.1 million and 165.9 million in 2012 and 2013 respectively . Thus, there is great opportunity for mHealth in using these mobile devices and, in fact, a significant number of mHealth applications have been already developed for these platforms.
The size of an acquisition and processing system for an array depends on the number of sensors and the set of processing algorithms. Thus, it is necessary to use a very low-cost technology per channel, in order to build a viable high dimensional array. Using MEMS microphones allows for a cost reduction of two main elements of the system: sensors and acquisition systems. Digital MEMS microphones need only one digital input to be read, although the received digital data must be processed to obtain the waveform signal. Most acquisition systems are based on FPGAs, which have a large number of digital inputs, between 40 and 1400 depending on the model; so, one FPGA can acquire as much channels as the number of digital inputs it contains. Besides, FPGA processing capacity allows the system to carry out simple operations with the acquired signals without increasing costs. The processing capacity of the FPGA is not enough to obtain the final acoustic image so it is necessary that another processor with higher capacity be joined to the FPGA.