Miracle-dz/UniFAR-FTUs huggingface dataset:
Photosynthesis and the role of plastids ( kleptoplastids ) in Sacoglossa ( Heterobranchia , Gastropoda ) : a short review

In this manuscript I will give a short summary of our knowledge on photosynthesis in the enigmatic gastropod group Sacoglossa. Members of this group are able to sequester chloroplasts from their food algae (mainly Chlorophyta) and store them for weeks and months and it was assumed for a long time that they can use chloroplasts in a similar way as plants do. Only few sacoglossan species are able to perform photosynthesis for months, others are less effective or are not able at all. The processes involved are investigated now for a few years, but are still not clear. However we know now that many factors contribute to this enigmatic biological system. These include extrinsic (environment, origin and properties of the nutrition and the plastids) and intrinsic factors of slugs and algae (behaviour, physiological and anatomical properties). Plastids are not maintained by genes that might have originated by a horizontal gene transfer (HGT) from the algal genome into the slug genome, as was hypothesized for many years. We therefore have to focus our research now on other factors to understand what actually contributes to this unique metazoan phenomenon which is not yet understood. In this review, some of these new approaches are summarized.
P o S ( I S G C 2 0 1 6 ) 0 0 9 Improvement of Scalability in Sharing Visualcasting Contents for Heterogeneous Display Environments

An e-Science infrastructure for efficient discussion between researchers at remote sites is required. A Tiled Display Wall (TDW) can display visualization contents on a large, high-resolution display constructed from multiple monitors arranged in a matrix. To realize this infrastructure, visualization contents need to be shared between multiple TDWs at remote sites. Visualcasting is a technique that shares visualization contents between multiple TDWs which have heterogeneous display environments. However, Visualcasting has a scalability issue with the number of TDWs. To improve this issue, we propose a dynamic rearrangement mechanism for Visualcasting. In the evaluation, our proposed mechanism is shown to improve scalability.
The Practice and Exploration of Virtual Roaming based on 3 Ds

This paper focuses to build a completely immersive campus roaming system with taking Shanghai Technician School as the object of 3D virtual roaming system by using 3Ds Max and Quest 3D platform as development tools, combining WebGL and threes.js library programming language, and integrating with HTML5 pages. The technology of camera creation, lighting setting and trifold screen release of VR scene in the integrated development stage of the system are studied, and the complete scheme of virtual simulation roaming system based on the fully immersive case of campus is proposed and implemented, which provides a reference for the application of the fully immersive virtual simulation roaming system.
N A ] 1 6 A pr 2 01 9 A stabilized semi-implicit Fourier spectral method for nonlinear space-fractional reaction-diffusion equations

The reaction-diffusion model can generate a wide variety of spatial patterns, which has been widely applied in chemistry, biology, and physics, even used to explain self-regulated pattern formation in the developing animal embryo [1]. In this work, a second-order stabilized semiimplicit time-stepping Fourier spectral method is presented for the reaction-diffusion systems of equations with space described by the fractional Laplacian. We adopt the temporal-spatial error splitting argument to illustrate that the proposed method is stable without imposing the CFL condition, and we prove an optimal L-error estimate. We also analyze the linear stability of the stabilized semi-implicit method and obtain a practical criterion to choose the time step size to guarantee the stability of the semi-implicit method. Our approach is illustrated by solving several problems of practical interest, including the fractional AllenCahn, Gray-Scott and FitzHugh-Nagumo models, together with an analysis of the properties of these systems in terms of the fractional power of the underlying Laplacian operator, which are quite different from the patterns of the corresponding integer-order model.
Correlations of T 2 * Mapping with Delayed Gadolinium Enhancement in Magnetic Resonance Imaging of Chronic Myocardial Infarction

Background: Scar tissue formation is a common phenomenon in myocardial infarctions. Contrast-enhanced cardiac magnetic resonance imaging is the modality of choice to evaluate the location and size of the scar tissue. Nevertheless, in patients with severe kidney impairment, administration of gadolinium is contraindicated. Objectives: So the aim of this study was to substitute a safe way for myocardial infarction assessments in patients with a history of renal function impairment. We assessed the T2* quantitative value changes in myocardial infarction-related scar tissue and compared them with normal/remote myocardial tissue T2* values to evaluate its application in non-contrast cardiac magnetic resonance imaging viability assessments. Patients and Methods: Twenty patients with a previous history of non ST-elevation myocardial infarction (NSTEMI) underwent cardiac magnetic resonance (CMR) examination with a 1.5T MR imaging scanner (Avanto, Siemens AG Healthcare Sector, Erlangen, Germany). The time interval between myocardial infarction occurrence and CMR assessment was at least six months. All the patients had normal kidney function. The imaging protocol consisted of three steps: the functional left-ventricular imaging; 8-echoes gradient recalled echo T2* mapping; and delayed/late gadolinium-enhancement imaging. The left-ventricle functional and T2* mapping assessments were done by CMR42 image analysis software (Circle Cardiovascular Imaging, Calgary, Canada). T2* values were calculated for 49 regions of interests (ROIs) at the infarction (14 ROIs), peri-infarction (12 ROIs), and remote/normal myocardial tissues (23 ROIs), and their means were compared statistically by the Leven’s test. Finally, the receiver operator characteristics curve was calculated. Results: T2* (mean ± SD) values of the normal/remote, peri-infarction, and infarcted myocardial tissues were calculated as 29.42 ± 4.50, 30.71 ± 4.86, and 35.46 ± 3.61, respectively. There was a significant alteration in the post-infarction scar tissue’s myocardial T2* values by comparison with the normal/remote myocardium (P < 0.001). No significant differences were noticed between the normal/remote and peri-infarction regions’ T2* relaxation times (P > 0.05). Area under the curve was 81% for patients evaluated for scars. Cutoff value of 31.70 yielded 92% sensitivity and 72% specificity. Conclusion: T2* relaxation time can provide useful and sensitive information on scar tissue formation location, and can offer a greater sensitivity into the non-contrast CMR imaging viability assessments besides other relaxation phenomena, especially the longitudinal relaxation time.
A METHOD TO CONNECT MATHEMATICS AND SCIENCES USING A COMPUTER ALGEBRA SYSTEM

The paper presents an experience driven over twenty years in an Institute of Technology. The two first authors are mathematicians, the third one is teaching automatic control and the last is a specialist in digital electronics. The authors have worked, discussed and shared their common teaching experience on how to restore the vanishing student motivation mainly due to the running and efficient technology. As the powerful software in any domain are getting higher, their use in education seem unavoidable. The paper deals with the use of a computer algebra system in a closed connection and applications to the above scientific domains. A computer algebra system is a software that eases the calculation in a way closed to the same as hand calculation. They are used in mathematics and sciences. Their main features are given in the following. A user friendly interface eases the symbolic manipulations. All numerical operations can be done in an arbitrary-precision. The sketch of curves and surfaces is possible in any representation mode. Some systems offers more features first in additional library then included later in the software after users comments and feedback. For a pedagogical purpose, the well-built on line help is one of the first criterion to choose a computer algebra system rather another one. Nowadays, in higher education, the curriculum of some course includes their natural use in mathematics classrooms. To make mathematics more attractive, to apply them to different technologies and to do an effective scientific work with pleasure, the authors have adjusted a method that has proved its efficiency for many years. The method is based on the use of a computer algebra system. The paper details this new method. The method is illustrated by three examples in different domains. The
Loughborough University Institutional Repository Leveraging dynamic export capabilities for competitive advantage and performance consequences : Evidence from China

As the business arena becomes more global and therefore dynamic, organizations must balance their capabilities with the demands and the conditions of the international marketplace. This leads firms to trade off the development of more capabilities with the identification of core capabilities which can best improve export competitiveness and performance. Based on the Dynamic Capabilities Approach (DCA), we develop a model of four export capabilities, namely adaptability, innovativeness, unpredictability, and task-flexibility, aimed at achieving competitive advantage in foreign markets and enhance export performance. Based on a survey of 213 Chinese exporting organizations, we find out that innovativeness, unpredictability and taskflexibility are positively related to competitive advantage, while adaptability is negatively related to it. Moreover, we uncovered that in the cases of adaptability, innovativeness and taskflexibility their impact on competitive advantage diminishes under higher levels of competitive intensity, however, for unpredictability this impact becomes negative. We also confirm the necessity of addressing competitive advantage separately from firms’ performance.
Feature Extraction of Speech Perceptual Linear Prediction Coding of Speech

This paper introduces a system for transmitting the aircraft guidance command over a narrow band communication channel in a secured way. The paper takes into account the noise, which exists in the guidance center. The proposed system is based on speech recognition and consists of two modules; one on the ground and the other is on the onboard. Guidance command words are modeled using Hidden Markov Modeling (HMM) and stored in the onboard module. During operation the input guidance word is processed and transmitted in a coded form from the ground module to the aircraft. The onboard module recognizes the words using HMM speech recognizer. The feature extraction technique used in this work is the Perceptual Linear Predictive (PLP) coding, which shows good immunity to noise. The performance measure is the recognition accuracy at different SNRs, as well as the achieved compression ratio of the transmitted message.
AT ANY TIME AT DIFFERENT TIME IN THE SAME PLACE AT DIFFERENT TIME IN VARIOUS PLACES AT THE SAME TIME IN VARIOUS PLACES AT THE SAME TIME IN THE SAME PLACE

Information technologies quickly develop in a knowledge society, the speed of the introduction of new knowledge also increases, so the modern enterprise seeking for the new management possibilities tries to use all these opportunities. In this process the forming of the human resources is very important in this process such is the development of the education system. Information transfer for the individual user is the inseparable part of the communication process inside the organization. For communication to be effective the organization has to distribute the positions, competences, responsibilities and motivation that are determined by the organizational structure. The importance of organizational structures is declared by the scientists and practitioners of various countries (Galbrait, 1994; Гвишиани, 2005, Soldatos., Hardy, 2004. Minzberg, 1984; Paliulis., Chlivickas, 1998), but only few of them have modern organizational structures. The organizational structure can be discussed from several points of view: as the initial base necessary for the formation of the structure and the necessary number of employees (this special aspect is stressed in this paper) and as the system ensuring the change of effective information. Severe competition requires the creation of modern and present day changes corresponding organizational management structures. Huge, bureaucratic, high hierarchy structures with long and insufficiently motivated chains of solution approval actually are unable to work good enough in the situation when quick changes take place in business. With the speed of the changes of global economy in mind it is important to know that the restructuring of organizations in accordance with the situation in the present day business environment can improve the situation only for a short time. The possible outcome can be only the constant adaptation of the organizational structure to the changing internal and external conditions.
INFLUENCE OF PASS SCHEDULE DESIGN ON PROGRESSIVE DAMAGE OF COPPER WIRE DURING MULTI-PASS WIRE DRAWING PROCESS ( Conference ID : CFP / 392 / 2017 )

A study of copper wire centerline and surface ductile damage during multi-pass wire drawing process using the finite element method is presented. Abaqus 6.14 Explicit packager was used to generate a 2D axisymmetric model of an electrolytic wrought copper wire which was subjected to five different area reductions (10, 12, 14, 16 and 18%). Based on an industrial setup, an eightpass wire drawing process was modelled and by applying the Cockroft and Latham criterion for two selected nodes, cumulative ductile damage effects were evaluated at the nodes. Analysis of the models showed that the Cockroft and Latham damage criterion was met at 16% area reduction in the fourth multi-pass stage for the centerline nodes, whereas the criterion was met at 14% area reduction during the third multi-pass stage for the surface nodes. The models showed that ductile damage was highest for both nodes during the first multi-pass stage and lowest during the fourth multi-pass stage. For the centerline nodes damage initiation accelerated after the 14% area reduction, whereas for the surface nodes ductile damage accelerated after the 12% area reduction point. Micrographs on internal and surface void microstructures during the first and last multipasses supported the damage models.
L ] 5 D ec 2 01 3 Max-Min Distance Nonnegative Matrix Factorization

Nonnegative Matrix Factorization (NMF) has been a popular representation method for pattern classification problem. It tries to decompose a nonnegative matrix of data samples as the product of a nonnegative basic matrix and a nonnegative coefficient matrix, and the coefficient matrix is used as the new representation. However, traditional NMF methods ignore the class labels of the data samples. In this paper, we proposed a supervised novel NMF algorithm to improve the discriminative ability of the new representation. Using the class labels, we separate all the data sample pairs into within-class pairs and between-class pairs. To improve the discriminate ability of the new NMF representations, we hope that the maximum distance of the within-class pairs pairs in the new NMF space could be minimized, while the minimum distance of the between-class pairs pairs could be maximized. With this criteria, we construct an objective function and optimize it with regard to basic and coefficient matrices, and slack variables alternatively, resulting in a iterative algorithm.
RADIOSYNTHESIS OF VARIOUS PYRIMIDINE DERIVATIVES AND DETERMINING THEIR UPTAKE INTO CELLS

N3-substituted pyrimidine nucleoside derivatives containing either an iodovinyl moiety or an allyl group, i.e. [121]-N-(3-iodoprop-2-enl -yl)thymidine, (1~-711 and e21]-N-(prop-2-enl-yl)-5-iodo-Z'-deoxyuridine, (1~_10, were synthesised and preliminarily evaluated by determining their uptake into CHO-Kl cells. Compound e~-711 was designed to be a delivery vector of 121: into the DNA of the cells, while (1~_10was designed to serve as a control. Compound (1231]-711 was also intended to have a higher metabolic radiochemical stability than 5-iodo-Z'-deoxyuridine ([123I]_IUdR) for the therapeutic use in cancer. The synthesis of the N-substituted intermediate precursors 411, 5 and 9 was achieved by Nalkylation of suitably' protected thymidine and 5-iodo-Z'-deoxywidine analogues, respectively. The intmediate precursors for radiolabelling, 411 and 11, were obtained by incorporating a trialkylstannyl group at the respective labelling positions prior to radioidination. (1~1-711 was recovered from (1~_6G after acid-hydrolysis of the protecting groups and 10 was obtained from direct oxidative iodination of11. The radiochemical yields ranged from 73% to 91% at the end ofthe synthesis and radiochemical purities were in excess of99"10 after HPLC purification. The cell-uptakes ofthe radiotracers were carried out and assessed by a direct comparison with the gold standard e23I]-IUdR, which is known to be phosphorylated and incorporated into the DNA of cells during the cells S-phase. The cell-uptake results of (1~_711 and (1~-10 were roughly 4% and 3% relative to [123I]-IUdR, respectively. The poor cell-uptake of (1~_10 suggested that the uptake into the cells is not influenced by the position of the iodine atom in the molecule, but most probably by the availability of the N-position in its non-substituted form. As a result of its poor incorporation into cells, it was concluded that the synthesised radiotracer (1231]_711 would bea poor candidate for use in the eradication ofmalignant cells.
The approaches of failed medical students to academic failure : a qualitative research

ABSTRACT Introduction: There are many quantitative studies on academic failure in the medical faculty. This study aimed to investigate the opinions of students who were having an academic failure in the medical school and to reveal the underlying causes. Methods: The study was designed as a qualitative research. The population of the study comprised of students failed while they were studying at the İzmir Katip Çelebi University Faculty of Medicine during the 20142015 academic year. Failure was defined as the repetition of a study year. Thus, phase 4 and 5 students were not included. The study sample was composed of medical students who failed at phase 1, 2, or 3, chosen by quota sampling. Data was collected using semi-structured questions asked by face-to-face interviews. The interviews were done between April-May 2016. A personal information form was used to collect data related to the students’ socio-demographic, individual, and academic characteristics. Thematic analysis was used for data analysis. Results: After the interpretation was made by four researchers, the following themes were created: Opinions and beliefs of the students about the effects of faculty on academic success; attitudes, beliefs, and opinions on study behaviors; feelings and believes on becoming a medical doctor; and views about the impact of the social environment. It was determined that the most frequently mentioned factor by the students as the leading cause of their repetition of the class was an insufficient academic effort. Other remarkable topics were; students not benefiting from counseling services and not attending the lectures of instructors of whom they didn’t like the way of presentation and lecturing. Conclusions: Introducing students about advisory services given by lecturers and providing advice from their experienced advisors especially to the students who repeat classes, can contribute to academic success. Training of lecturers on effective lecturing can contribute to academic achievement by increasing the attendance of students. Giving due importance to introduce the occupation from the early days of education can improve the motivation to learning.
Examensarbete Providing Quality of Service for Streaming Applications in Evolved 3 G Networks

The third generation, 3G, mobile telephone systems are designed for multimedia communication and will offer us similar services as in our stationary computers. This will involve large traffic loads, especially in the downlink direction, i.e. from base station to terminal. To improve the downlink capacity for packet data services a new concept is included in evolved 3G networks. The concept is called High Speed Data Packet Access, HSDPA, and provides peak bit rates of 14Mbps. HSDPA uses a so-called best effort channel, i.e. it is developed for services that do not require guaranteed bit rates. The channel is divided in time between the users and a scheduling algorithm is used to allocate the channel among them. Streaming is a common technology for video transmission over the Internet and with 3G it is supposed to become popular also in our mobiles. Streaming generates lots of data traffic in the downlink direction and it would thus be satisfying to make use of the high bit rates HSDPA provides. The problem is that streaming requires reasonable stable bit rates, which is not guaranteed using HSDPA. The aim of this study is to modify the scheduling algorithms to prioritise streaming over web users and provide streaming Quality of Service, QoS. QoS is the ability to guarantee certain transmission characteristics. The results of the study show that it is hard to improve the streaming capacity by modifications of the scheduling. Of course, a consequence is that the web user throughput is decreased and to avoid this, new users have to be rejected by the admission control. The solution is to prioritise the streaming users both in the scheduling algorithm and in the admission control, i.e. when the system is nearly full new web users are rejected. By doing so the results are significantly improved.
EasyChair Preprint No 1294 Analysis of variable-stiffness soft finger joints

This paper addresses the problem of designing an artificial finger with variable stiffness in its joints. Our approach is based on the principle of combining different means of actuation. Two different versions of variable-stiffness joints are presented and used in the design and manufacturing of three prototypes of gripper fingers. Diverse material configurations are used in order to determine which are the distinctive capabilities of each one and how they differ. In order to test the fingers we built a test bench that allows us to measure the movement of the tendon-driven actuation, the pressure of air actuation and the force that is deployed in the tip of the finger. Several tests are made to measure the relation between the actuation input and the force exerted by the fingertips. Our results suggest that the best mechanism to achieve variable stiffness in the joints is a soft-rigid hybrid finger.
The Effect of the Shape of Eyeglasses on Judgements Toward Wearers’ Occupations - Replication and Extension of Guéguen (2015)

Studies have found that eyeglasses could increase the perceived intelligence of wearers, and the shape of eyeglasses also has an influence on judgements of wearers’ personalities. This study replicates Guéguen (2015), in which the influence of the presence or absence of eyeglasses on the estimation of the wearer’s socio-professional group was investigated, and extends the previous research by taking eyeglass shapes into consideration. Participants looked at a photograph of the face of a man with round or square eyeglasses or no eyeglasses, and estimated his occupation. The results indicated that the face with eyeglasses is more likely to be judged as that of a high status person, especially when the eyeglasses are square rather than round. It could be explained that a metaphor-consistent link between shape and personality and perceived higher competence changes the estimation of the occupation of the target.