The investigation of the space environment requires the use of experimental and theoretical tools and resources in order to perform the research task. Understanding of these research tools is imperative for proper interpretation of the results. In this paper, we discuss on research tools that are widely used in the field of aeronomy; Fabry-Perot interferometer and Michelson interferometer. These instruments have been used extensively as passive optical devices, spectrally monitoring the natural atmospheric emissions (airglow). This function has made both instruments valuable tools in upper atmospheric studies since they provide the ability to determine the dynamic and thermodynamic properties of the upper atmosphere by monitoring naturally-occuring emission.

We examined a total of 166 images of 3.5 μm H3+ emission in the auroral regions of Jupiter observed with the Protocam on IRTF in 1991 and 1992, and found that 30 images contain a clearly isolated small emission patch in the vicinity of the northern auroral regions. Two different time sequences of the images show the small patches at the dusk limb in the range of System III longitudes from 270° through 0° to 90°. The small patches in one sequence of the images, which were taken at 10 phase between 240° and 260°, may be related to the 10 flux tube, similarly suggested by Connerney et al. (1993). However, the small patches in the other sequence are separated from Io as much as 80° in longitude. The positions of the small patches in both sequences are deviated equatorward from the 10 footprint oval by 5° - 8° latitude in the longitudinal range of 270° - 360°. A significant modification is required in current Jovian magnetic field models near the Jupiter's surface if the small patches are produced at the foot of the 10 flux tube.

The present day mass functions of main sequence stars in the well observed open clusters, Hyades, Praesepe, Pleiades, NGC 654 and NGC 6530 arc derived and compared with those computed from the model of time-dependent initial mass function and star formation rate. The agreements between the observed and computed present day mass functions suggest the importance of fragmentation process at the early phase and fragment interaction at the later phase of cluster evolution. This process of star formation is different from that related to the evolution of the solar neighborhood, and also could explain the lack of low mass stars observed in some open clusters.

In this paper, we try to show that Miyagawa’s (2017) analysis is only partially on the right track. We believe that Miyagawa’s (2017) observation that WHY can be externally merged under TP is not completely wrong. The difference of our position from Miyagawa’s lies in our proposal that WHY be externally merged as a CP-modifier (Ko 2005) or as a VP-modifier (Tsai 2008). We will see that there are two types of WHY in Korean, and we will also encounter novel data concerning wh-less whquestions. Defending Ko’s (2005) CP-modifier hypothesis, we make a criticism of Miyagawa’s (2017) approach, and then try to come up with a (very tentative) alternative account which can explain the counterexamples to Ko’s CMH.

This paper particularly brings Epstein, Kitahara, and Seely’s (EKS 2014) suggestion into critical consideration and tries to make an alternative to their suggestion. What is interesting in EKS’s (2014) proposal is that they argue for the unnecessity of such concepts as numeration and lexical array, and even for the elimination of phases. Though it has been taken for granted that computational complexities are resolved by transferring some stages of a derivation as chunks to the interfaces and then continuing the derivation as such, EKS (2014) apparently prove that we can use the labeling algorithm to resolve the computational complexities in the way that some chunks are constructed even without phases. In this paper, we will see that the concepts of lexical array and numeration are necessary, despite the plausibility of EKS’s suggestion. Furthermore, it will be shown that with the independent necessity of those concepts, we still need the concept of phase as the basic unit of derivation and transfer.

Yong-Ha Kim. 2017. On the Problem of the Timing of Labeling: A Reply to Bošković (2016). Studies in Modern Grammar 96, 51-66. In this study, we critically discuss Bošković’s (2016) recent proposal about the labeling algorithm as proposed by Chomsky (2013, 2015). Bošković’s (2016) main claim is that the timing of labelling should be considered a crucial issue in Chomsky’s labeling algorithm. According to him, whatever its formulation, the labeling algorithm is taken to apply when the derivation reaches the interface. This means that there can, and should, be phrases without labels until the derivation enters the interface. Bošković (2016) further assumes that the label-less phrases trigger antilocality effects though the relevant movement would be sufficiently long if they had their own labels. With this assumption about the timing of labeling, Bošković is apparently successful in accounting for many interesting grammatical phenomena in a unique fashion.

Merge is assumed to come free in minimalist program. The logic for this assumption is that we could not even utter a sentence because it’s the cheapest way. With Merge as an indispensible operation in grammar, this paper explores the nature of a feature that serves as the trigger of Merge. In recent terminology, the feature in question is called an edge feature EF. Based on the observation that movement always targets a functional head, this paper tries to show that non-functional lexical items really have a limitation in the number of Merge, that is to say, they can merge just once and for all.