Two newly recorded genera Tolongia and Yamatolygus of the mirine plant bugs (Hemiptera: Heteroptera: Miridae) from the Korean Peninsula

Two genera of the plant bug in the subfamily Mirinae (Hemiptera: Heteroptera: Miridae) are newly reported from the Korean Peninsula with discoveries of Tolongia pilosa Yasunaga, 1991 and Yamatolygus insulanus Yasunaga, 1994. The male genital structure of T. pilosa is remarked. Female genitalia of Y. insulanus is described for the first time. Morphological information such as diagnoses is also provided. Keywords: Mirinae, New record, The Korean Peninsula, Tolongia, Yamatolygu

Model Predictive Control Based Path Tracking and Velocity Control with Rollover Prevention Function for Autonomous Electric Road Sweeper

This paper presents a model predictive control (MPC)-based algorithm for rollover prevention of an autonomous electric road sweeper (AERS). For AERS, the basic function of autonomous driving is a path- and velocity-tracking control needed to make a vehicle follow given path and velocity profiles. On the other, the AERS adopts an articulated frame steering (AFS) mechanism which can make cornering behavior agile. Moreover, the tread of the AERS is narrow, and the height of the mass center is high. As a result, it is prone to roll over. For this reason, it is necessary to design a controller for path and velocity tracking and rollover prevention in order to improve maneuverability and roll safety of the AERS. A kinematic model was adopted as a vehicle one for the AERS. With the vehicle model, reference states of position and velocity were determined that are needed to make the AERS track the reference path and prevent rollover. With the vehicle model and reference states, an MPC-based motion controller was designed to optimize articulation angle and velocity commands. The load-transfer ratio (LTR) was used to measure a rollover propensity. To evaluate the proposed algorithm, a simulation was conducted for the U-turn scenario. Simulation results show that the proposed algorithm improves path tracking and prevents the rollover of the AERS

Model Predictive Control Based Path Tracking and Velocity Control with Rollover Prevention Function for Autonomous Electric Road Sweeper

This paper presents a model predictive control (MPC)-based algorithm for rollover prevention of an autonomous electric road sweeper (AERS). For AERS, the basic function of autonomous driving is a path- and velocity-tracking control needed to make a vehicle follow given path and velocity profiles. On the other, the AERS adopts an articulated frame steering (AFS) mechanism which can make cornering behavior agile. Moreover, the tread of the AERS is narrow, and the height of the mass center is high. As a result, it is prone to roll over. For this reason, it is necessary to design a controller for path and velocity tracking and rollover prevention in order to improve maneuverability and roll safety of the AERS. A kinematic model was adopted as a vehicle one for the AERS. With the vehicle model, reference states of position and velocity were determined that are needed to make the AERS track the reference path and prevent rollover. With the vehicle model and reference states, an MPC-based motion controller was designed to optimize articulation angle and velocity commands. The load-transfer ratio (LTR) was used to measure a rollover propensity. To evaluate the proposed algorithm, a simulation was conducted for the U-turn scenario. Simulation results show that the proposed algorithm improves path tracking and prevents the rollover of the AERS

First record of family Dipsocoridae (Hemiptera: Heteroptera: Dipsocoromorpha) from the Korean Peninsula and a new generic combination for Cryptostemma japonicum Miyamoto

Kim, Junggon, Kim, Wongun, Park, Jihwan, Jung, Sunghoon (2019): First record of family Dipsocoridae (Hemiptera: Heteroptera: Dipsocoromorpha) from the Korean Peninsula and a new generic combination for Cryptostemma japonicum Miyamoto. Zootaxa 4577 (1): 195-200, DOI: https://doi.org/10.11646/zootaxa.4577.1.1

New records of genus Aradus Fabricius (Hemiptera: Aradidae) from Korea, with first male description of Aradus gretae Kiritshenko

Three species of genus Aradus Fabricius (A. betulae (Linnaeus), A. betulinus Fallén, and A. gretae Kiritshenko) are newly recognized from the Korean Peninsula. Photographs of habitus and diagnosis are presented for the newly recorded species. The male of Aradus gretae Kiritshenko is described for the first time. A checklist and key to species of the genus Aradus recorded from Korea are provided

Brachymna tenuis Stål, 1861 (Hemiptera: Pentatomidae), a new invasive bamboo pest in Korea with notes on insects associated with bamboos

We report first observations of the invasive bamboo pest, Brachymna tenuis Stål, 1861 in Korea as the first species of Brachymna Stål, 1861 (Pentatomidae) reported from the country.Comments on its pest status and distribution are provided. General information on Bamboo-feeding insect in Korea is analysed and provided for the first time

Newly recorded genus Pantilius Curtis (Hemiptera: Heteroptera: Miridae) from the Korean Peninsula, with a key to the world Pantilius species

A genus, Pantilius Curtis (Hemiptera: Heteroptera: Miridae: Mirinae), is reported for the first time from the Korean Peninsula, based on finding a species of Pantilius hayashii Miyamoto and Yasunaga, 1989, which was hitherto known only from Honshu, Japan. The morphological information, such as description and diagnosis, is presented with photographs and illustrations of adult habitus and male genitalia

Taxonomic review of the genus Castanopsides Yasunaga (Hemiptera: Heteroptera: Miridae: Mirinae) from the Korean Peninsula

A genus Castanopsides Yasunaga (Hemiptera: Heteroptera: Miridae: Mirinae) is reviewed from the Korean Peninsula. Castanopsides falkovitshi (Kerzhner 1979) is reported for the first time. Descriptions of male genitalia, diagnoses, and a key to the Korean Castanopsides are provided with illustrations and photographs

Additional record of Tuponia Reuter (Heteroptera, Miridae, Phylinae) from Korea, with a new synonym and discussion on distribution

BackgroundThe genus Tuponia Reuter, 1875 belongs to the subfamily Phylinae and comprises 91 species worldwide. Before this study, only T. koreana Kim & Jung had been recorded from the Korean Peninsula. New information Two species of Tuponia Reuter, 1910 are recognised from the Korean Peninsula including the first record of T. mongolica Drapolyuk, 1980. T. koreana Kim & Jung, 2021 is proposed as a junior synonym of T. chinensis Zheng & Li, 1992. The species is identified, based on the dorsal habitus and male and female genitalic structures. A brief discussion of the distribution of Korean Tuponia species also is presented.Y

WALDIO: Eliminating the Filesystem Journaling in Resolving the Journaling of Journal Anomaly

This work is dedicated to resolve the Journaling of Journal Anomaly in Android IO stack.We orchestrate SQLite and EXT4 filesystem so that SQLite???s file-backed journaling activity can dispense with the expensive filesystem intervention, the journaling, without compromising the file integrity under unexpected filesystem failure. In storing the logs, we exploit the direct IO to suppress the filesystem interference. This work consists of three key ingredients: (i) Preallocation with Explicit Journaling, (ii) Header Embedding, and (iii) Group Synchronization. Preallocation with Explicit Journaling eliminates the filesystem journaling properly protecting the file metadata against the unexpected system crash. We redesign the SQLite B-tree structure with Header Embedding to make it direct IO compatible and block IO friendly. With Group Synch, we minimize the synchronization overhead of direct IO and make the SQLite operation NAND Flash friendly. Combining the three technical ingredients, we develop a new journal mode in SQLite, the WALDIO. We implement it on the commercially available smartphone. WALDIO mode achieves 5.1x performance (insert/sec) against WAL mode which is the fastest journaling mode in SQLite. It yields 2.7x performance (inserts/ sec) against the LS-MVBT, the fastest SQLite journaling mode known to public. WALDIO mode achieves 7.4x performance (insert/sec) against WAL mode when it is relieved from the overhead of explicitly synchronizing individual log-commit operations. WALDIO mode reduces the IO volume to 1/6 compared against the WAL mode