Null Subjects and Objects in Child English

Han, Ho,Choe, Soon-Gwon,Park, Yeon-Sook The English Teachers Association in Korea 2004 영어어문교육 Vol.10 No.2

This paper explores some possible interpretations of subject/object in child language, pointing out some potential problems in recent works within the minimalist framework and suggesting different views on it. Particularly, we will focus on how to identify and/or license objects, since most of the studies relevant to this issue have accounted for subjects only. Discussing the results of the studies on child language data, we will show that previous syntactic explanations on subjects, which have seemed quite attractive and refined, may not hold when accounting for objects and various aspects and properties of arguments in those child languages. In doing so, we will suggest and support a performance-based account, a discourse-based account, and a markedness account.

A Syntactic Account of the Varying Effects of Recasts

Han. Ho 한국중앙영어영문학회 2009 영어영문학연구 Vol.51 No.4

This study explores why different effects are obtained through recasts, drawing attention to the nature of the target construction of recasts. During last decades, the negotiated interaction model have got much popularity in the study of language learning including EFL learning. One of the issues in this model is how errors are corrected through interaction, and researchers have got interested in cognitive processes that can be identified through conversational interactions. In particular, it has been found that recasts serve as a tool for providing negative evidence and constitute contingent responses to L2 learners’ ungrammaticality. It has been tested in several studies whether or not and how much recasts are effective in error correction (Mackey & Philp, 1998; Long, Inagaki, & Ortega, 1998; Phip, 2003). The findings reveal that the effects of recasts are quite different among target grammatical constructions. I argue in this study that the observed differences in the effects of recasts may root in the different grammatical properties of the target constructions among other factors and L2 learners’ sensitivity to those properties. For pedagogical implications, I suggest that recasts should be taken to be a tool not for direct error correction but for building implicit knowledge of certain grammatical items.

Changes in Anxiety and Motivation in aContent-Based Intensive English Program

Han. Ho,Hye-Kyung Lee 한국중앙영어영문학회 2008 영어영문학연구 Vol.50 No.4

The goal of this study is to find out if any changes occur in EFL learners’ anxiety and motivation between before and after a content-based intensive EFL program, which is a sort of CBI. The study is a replication study of Hwang (2002), and the results of the two studies are compared. Hwang (2002) reported that through a college CBI course, learners’ anxiety was lowered and the motivation of the utilitarian goal orientation increased significantly but that of the mastery or learning and the ego-social orientation didn’t. The current study finds the followings: 1) learners’ anxiety level gets lowered. to a greater extent than the results obtained in Hwang’s study; 2) only the motivation of the ego-social goal orientation increases significantly while the motivation of the other two types do not. The different results between the two studies are attributed to the different nature of the program of each study. The intensive immersion program of CBI lets learners have more social interactions, and thus get motivated through the ego-social orientation. In turn, it raises integrative motivation. We conclude that universities should run a CBI program in various forms to help students get motivated through various goal orientations.

Language Change : From Syntactic Incorporation to Lexical Compounding

Han, Ho 대한언어학회 1998 언어학 Vol.6 No.2

Han, Ho. 1998. Language Change: From Syntactic Incorporation to Lexical Compounding. Linguistics, 6-2, 67-81. This study explores ongoing structural change with respect to light verb ha- constructions (henceforth, LVC) in Korean. The ha- LVC generates through the process of combining a Sino-Korean(SK) noun with the LV ha-. In the literature this process is considered to be involved with some sort of incorporation in Baker's (1988) sense. In negating an LV complex as V, only one type of negatives is judged perfect. However, it will be shown that there is age variance in terms of acceptability of the other type of negatives. With language acquisition data and historical linguistic theories, I will argue that the structure of the LV ha- complex appears to be currently under change. (Ajou University)

Can Markedness Take Over Subset Principle?

Han, Ho 대한언어학회 1999 언어학 Vol.7 No.2

Han, Ho. 1999. Can markedness Take Over Subset Principle? Linguistics 7-2, 117-127. This study explores whether or not markedness can account for the acquisition data that the subset principle provide explanation for. Goodluck (1991) stipulates that logically the subset principle can be reduced to the notion of markedness. This stipulation is logically quite right, but it overlooks some cases of incongruity among markedness, the subset principle, and children's hypothesis testing. For the former issue, I will consider null subject utterances in child English, while for the latter issue, children's errors will be taken into account, which appear to result from hypothesis testing. I will conclude that markedness and the subset principle need to be considered as separate principles, countering Goodluck's (1991) stipulation. (Ajou University)

Sijo

Han Ho,Kevin O’Rourke(번역자) The Academy of Korean Studies 1978 Korea Journal Vol.18 No.6

Improved Maximum Access Delay Time, Noise Variance, and Power Delay Profile Estimations for OFDM Systems

Hanho Wang,임성묵,고균병 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.12

In this paper, we propose improved maximum access delay time, noise variance, and power delay profile (PDP) estimation schemes for orthogonal frequency division multiplexing (OFDM) system in multipath fading channels. To this end, we adopt the approximate maximum likelihood (ML) estimation strategy. For the first step, the log-likelihood function (LLF) of the received OFDM symbols is derived by utilizing only the cyclic redundancy induced by cyclic prefix (CP) without additional information. Then, the set of the initial path powers is sub-optimally obtained to maximize the derived LLF. In the second step, we can select a subset of the initial path power set, i.e. the maximum access delay time, so as to maximize the modified LLF. Through numerical simulations, the benefit of the proposed method is verified by comparison with the existing methods in terms of normalized mean square error, erroneous detection, and good detection probabilities.

Effect of Selection Diversity on Capacity of Dual-Polarized Antenna Systems

Hanho Wang,Gosan Noh 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.9

In line-of-sight (LoS) channel environments, two data stream transmissions can be independently made by adopting dual-polarized antenna (DPA) system. The capacity of the DPA system is mainly affected by a rotation angle between the transmitter and receiver DPAs and channel gains of vertical and horizontal receiver antennas, which results in signal to interference and noise (SINR) ratio. In this paper, SINR is defined in the DPA system. Then, in order to improve the capacity of the DPA system, selection diversity is propsed. In the proposed scheme, the best DPA user in terms of SINR is selected based on both the rotation angle and the channel gains. The resultant capacity of the DPA system increases two times when the selection order is three. The selected best user can even achieve 3 times the capacity when the selection order is six. In addition to that, the average rotation angle of the selected user is also analyzed and provided.

Performance Evaluation of Pilotless Channel Estimation with Limited Number of Data Symbols in Frequency Selective Channel

Hanho Wang 한국콘텐츠학회 2018 International Journal of Contents Vol.14 No.2

In a wireless mobile communication system, a pilot signal has been considered to be a necessary signal for estimating a changing channel between a base station and a terminal. All mobile communication systems developed so far have a specification for transmitting pilot signals. However, although the pilot signal transmission is easy to estimate the channel,(Ed: unclear wording: it is easy to use the pilot signal transmission to estimate the channel?) it should be minimized because it uses radio resources for data transmission. In this paper, we propose a pilotless channel estimation scheme (PCE) by introducing the clustering method of unsupervised learning used in our deep learning into channel estimation.(Ed: highlight- unclear) The PCE estimates the channel using only the data symbols without using the pilot signal at all. Also, to apply PCE to a real system, we evaluated the performance of PCE based on the resource block (RB), which is a resource allocation unit used in LTE. According to the results of this study, the PCE always provides a better mean square error (MSE) performance than the least square estimator using pilots, although it does not use the pilot signal at all. The MSE performance of the PCE is affected by the number of data symbols used and the frequency selectivity of the channel. In this paper, we provide simulation results considering various effects(Ed: unclear, clarify).

An empirical investigation of student acceptance of e-learning

Hanho Jeong 한국교육공학회 2012 한국교육공학회 학술대회발표자료집 Vol.2012 No.2