Kyuin Lee

The explosive proliferation of Internet-of-Things (IoT) ecosystem fuels the needs for a mechanism for the user to easily and securely interconnect multiple heterogeneous devices with minimal involvement. However, the current paradigm of context-unaware pairing and authentication methods (e.g., using a preset or user-defined password) poses severe challenges in the usability and security aspects due to the limited and siloed user interface that requires substantial effort on establishing or maint

Systemic sclerosis, previously known as scleroderma, is a heterogeneous, systemic disease that is defined by its 3 pathological hallmarks: the production of autoantibodies, small vessel vasculopathy, and fibroblast dysfunction, leading to an increased deposition of extracellular matrix. We conducted a review of the available literature that covers the cardiovascular manifestations of SSc: electrical conduction abnormalities, pulmonary hypertension, pericardial disease, and atherosclerosis. Withi

The study intends to assess the sustainability of super high–rise residential complexes from the viewpoint of residents. For the purpose of this study, the research first reviewed the KGBCC (Korean Green Building Certification Criteria) and related research materials. Secondly, it established sustainability indicators for assessment through synthesis of the KGBCC and UN Habitat Agenda. Finally, the assessment was completed by a survey of the residents of two similar super high–rise residential c

One of the most important issues in public transportation oriented urban structure is pedestrians′ accessibility to public transportation station. Pedestrians′ accessibility is influenced by socioeconomic conditions such as personal income and location of working places as well as primary factors such as access time and distance. The purpose of this study was to construct a comprehensive transportation selection model using a logistics model in order to understand the influences of various varia

As global considerations about the environment are on the increase, those working in the field of architecture have carried out many initiatives to protect the environment. The KGBCC (Korean Green Building Certification Criteria) was developed in 2000 in Korea and has operated since 2002. The Apartment for Good Living competition has been held since 1996 as social interest in green residences increases. The objective of this study is to suggest improvements and further direction for the KGBCC by

The emergence of the Internet of Things (IoT) and pervasive computing challenges in securely and conveniently connecting devices with limited user interfaces. In particular, discovering and bootstrapping a wireless connection (e.g., Wi-Fi and Bluetooth Low Energy) between two devices that share no prior knowledge, commonly known as pairing, often requires users to go through cumbersome tasks of manually discovering the target device and entering a long passkey. When the devices do not have a pro

Atrial fibrillation is a common supraventricular tachyarrhythmia with uncoordinated atrial activation and ineffective atrial contraction. This leads to an increased risk of atrial thrombi, most commonly in the left atrial appendage, and increased risks of embolic strokes and/or peripheral thromboembolism. It is associated with significant morbidity and mortality. To meet the concerns of thrombi and stroke, anticoagulation has been the mainstay for prevention and treatment thereof. Historically,

Wireless connectivity is becoming common in increasingly diverse personal devices, enabling various interoperation- and Internet-based applications and services. More and more interconnected devices are simultaneously operated by a single user with short-lived connections, making usable device authentication methods imperative to ensure both high security and seamless user experience. Unfortunately, current authentication methods that heavily require human involvement, in addition to form factor

The emergence of advanced in-vehicle infotainment (IVI) systems, such as Apple CarPlay and Android Auto, calls for fast and intuitive device pairing mechanisms to discover newly introduced devices and make or break a secure, high-bandwidth wireless connection. Current pairing schemes are tedious and lengthy as they typically require users to go through pairing and verification procedures by manually entering a predetermined or randomly generated pin on both devices. This inconvenience usually re

Osteoma of the external auditory canal is a rare benign tumor with an estimated incidence of 0.05% of total otologic surgeries. In most cases, an osteoma in the external auditory canal does not cause symptoms because the tumor grows slowly and does not occlude the ear canal. However, if the mass grows to occlude the external auditory canal, several symptoms can occur, including conductive hearing loss, aural fullness, and keratin debris accumulation. We present two cases of this rare tumor in a

Dermoid cyst is a rare benign tumor and about 7% of occurrences are found in the head and neck region. Its location is almost always in the midline of the body such as the orbit, oral cavity, and nose, but it is rarer in and around the auricle. The authors present a 31-year-old woman with dermoid cyst in the postauricular area which is a rare site for this lesion. In surgery under local anesthesia, the mass was limited to the subcutaneous area and excised completely. Surgical excision should be

This study investigates the performance of the “green refurbishment” of existing buildings. Two ordinary rooms in an existing building were chosen for examination. Refurbishment measures such as additional insulation, high-performance glazing, and air-tightening were applied to the control room. Temperature and electricity use were monitored to identify heating performance in winter and then compared with a baseline. The results of the field tests showed that green refurbishment significantly im

The objective of the present study is to assess the environmental sustainability of multi-family estates in Korea, and based on the assessment, to consider the best future direction for the further promotion of environmental sustainability. In this study, 111 representative multi-family housing estates in Korea were selected and assessed for their sustainability, based on sustainability indicators and standards, and the following conclusions were drawn. In assessment by sectors, the sustainabili

ABSTRACT Aquaculture in South Korea largely involves crudely-built plastic fishery houses that consume excessive electricity and produce carbon emissions. This study explores a potential method to make Korean aquaculture more sustainable by suggesting design alternatives that can save energy and costs. To this end, the authors compare the energy use and indoor environments of three different designs through field mockups. The three designs include (i) a triple-layered plastic screen house (Desig