User Experience in the Visual Notifications on Smart Devices

Notifications on smart devices have a crucial role for the end-users to help decide their action to the information. Despite the flexible customization of notifications for the intuitive user experience, users feel overwhelmed by the number of notifications they receive daily. The nature of notifications is short-lived, but they are extremely intrusive and disengaging. While user experience and user interface are advanced, notifications have remained broken despite their complexity. In fact, the notifications have the poorest usability that users may struggle to customize notifications in their smart devices and choose to ignore them. Irrelevant notifications not only get ignored, but it causes frustration and a false sense of urgency. Notifications must become conversational rather than a default system to feel as a helpful personal assistant. Previous research has identified the positive emotional influence from conversational and relevant signages in the physical space (Kim, 2017). The primary focus of this dissertation is to enrich the current notifications on smart devices, to establish the new concept – the smart notifications with the optimized visual signals that provide intuitive (e.g., helpful, personal, and relevant) user experience, and to propose applicable smart visual notification signals. The System Usability Scale (SUS) (Brooke, 1986) and Nielsen’s Heuristic (Nielsen, 1994) were used to measure the usability and user interface design of notifications on smart devices from participants. The results of this dissertation can be applied in future research as researchers can continue developing smart notifications that are intuitive and designers can use it as a guideline to build better user interfaces

Simultaneous dual-frequency radio observations of S5 0716+714: A search for intraday variability with the Korean VLBI Network

This study aims to search for the existence of intraday variability (IDV) of BL Lac object S5 0716+714 at high radio frequencies for which the interstellar scintillation effect is not significant. Using the 21-meter radio telescope of the Korean VLBI Network (KVN), we present results of multi-epoch simultaneous dual-frequency radio observations. Single-dish observations of S5 0716+714 were simultaneously conducted at 21.7 GHz (K-band) and 42.4 GHz (Q-band), with a high cadence of 30-60 minute intervals.We observed four epochs between December 2009 and June 2010. Over the whole set of observation epochs, S5 0716+714 showed significant inter-month variations in flux density at both the K- and Q-bands, with modulation indices of approximately 19% for the K-band and approximately 36% for the Q-band. In all epochs, no clear intraday variability was detected at either frequency. The source shows monotonic flux density increase in epochs 1 and 3 and monotonic flux density decrease in epochs 2 and 4. In the flux density increasing phases, the flux densities at the Q-band increase more rapidly. In the decreasing phase, no significant flux density difference is seen at the two frequencies. The situation could be different close to flux density peaks that we did not witness in our observations. We find an inverted spectrum with mean spectral indices of -0.57+-0.13 in epoch 1 and -0.15+-0.11 in epoch 3. On the other hand, we find relatively steep indices of +0.24+-0.14 and +0.17+-0.18 in epochs 2 and 4, respectively. We conclude that the frequency dependence of the variability and the change of the spectral index are caused by source-intrinsic effects rather than by any extrinsic scintillation effect.Comment: 6 pages and 4 figures and 4 table

The Counts of Dracula and Monte Cristo: Homonym Frequencies in Graded Readers

Graded readers are a great asset to learners acquiring the vocabulary of another language. Homonyms, on the other hand, are a recognized source of trouble for students with that same goal. Publishers of graded readers control the presentation of old and new words, but does this control extend to homonyms? Are only the word forms controlled for—in which case, the unrelated meanings of match (a pairing and a stick for starting fire) would together constitute two uses of the word? Or would these tally as separate words which, semantically and etymologically, they are? A comparison of a 4.2 million-word corpus of graded readers with previous research on the distributions of homonymic meanings in general English reveals that the meanings presented to learners are frequently quite different to those in general-purpose texts

Autoimmune hemolytic anemia predominantly associated with IgA anti-E and anti-c.

A patient with warm autoimmune hemolytic anemia (AIHA) due to predominance of immunoglobulin A (IgA) with an Rh specificity, considered to be the first case in Korea, is described. A 13-year-old male patient with severe hemolytic anemia showed a weak reactivity (1+) in the direct antiglobulin test (DAT) by using anti-IgG antiglobulin reagent. This finding, however, could not fully explain the patient's severe AIHA. When anti-IgA reagent was used for the DAT, strong reactivity (4+) was observed and free anti-E and anti-c autoantibodies were also detected by anti-IgA and anti-IgG reagents. The patient's hemoglobin began to rise with the administration of steroids. Because RBCs coated with multiple types of immunoglobulins are associated with more severe hemolysis than those only with IgG, the DATs using anti-IgA and other reagents are needed for the correct diagnosis when the result of DAT is not compatible with patient's clinical manifestations

Downbeat, Positional, and Perverted Head-Shaking Nystagmus Associated with Lamotrigine Toxicity

Lamotrigine is an effective antiepileptic drug with few adverse effects. Nystagmus is one of the commonly observable signs of lamotrigine overdose, which may result from central nervous system involvement. However, the physiologic basis of lamotrigine-induced nystagmus is not fully understood. Here we report a patient who presented with lamotrigine-associated nystagmus that was probably related to cerebellar dysfunction

Efficacy of inducible protein 10 as a biomarker for the diagnosis of tuberculosis

SummaryObjectiveThis study evaluated inducible protein 10 (IP-10) as a diagnostic biomarker for specific tuberculosis (TB) infection and evaluated the ability of IP-10 to distinguish between active TB and latent TB infection (LTBI).MethodsForty-six patients with active pulmonary TB, 22 participants with LTBI, and 32 non-TB controls were enrolled separately. We measured IP-10 in serum and in supernatants from whole blood stimulated with TB-specific antigens.ResultsTB antigen-dependent IP-10 secretion was significantly increased in the active TB patients and LTBI subjects compared with controls, but did not differ significantly between the active TB patients and LTBI subjects. Serum IP-10 levels were higher in active TB than in LTBI (174.9 vs. 102.7pg/ml, p=0.002). The respective rates of positive responders of TB antigen-dependent IP-10 were 97.8%, 90.9%, and 12.5% in active TB, LTBI, and non-TB controls, respectively. For serum IP-10, 87.5%, 45.5%, and 9.5% of responders were positive in the respective groups.ConclusionsThe IP-10 response to TB antigen may constitute a specific biomarker for TB infection, but does not by itself distinguish between active TB and LTBI. Serum IP-10 may enhance the diagnostic performance when used in combination with another marker