Blooming Lotus

Photography with description

Genuineness and Love: A Study of Feng Menglong\u27s Collection of Mountain Songs (Shan\u27ge 山歌)

Shan’ge 山歌 is a collection of popular songs in Wu dialect by the late Ming scholar Feng Menglong 冯梦龙 (1574-1646). Due to a lack of detailed literary analysis of the songs, and a lack of appreciation of these songs from the perspective of rhetorical aesthetics, I aim to provide a close reading of the siqing (私情) songs in Shan’ge. With the intention to offer a fresh perspective into the depiction of emotions and sentimental feelings, as well as the various ways of presenting the people’s perception of love and sexual desire in these songs, I endeavor to both enrich the understanding of Shan’ge and call critical attention to the subject mater of siqing. In my thesis, I argue that these Siqing songs are strong spokesmen and representatives of genuineness promoted by Feng Menglong in the preface of Shan’ge. I will examine how genuineness was promoted by the late Ming scholars and particularly, how Feng Menglong views genuineness and how he utilizes genuineness in the songs as a means to promote vernacular literature. The representative siqing songs will be categorized and explored in three sections, with the purpose of answering the following questions: How could Feng’s promotion of these popular songs be situated in the late Ming discourse of genuineness? How does Shan’ge vividly create a world that not only celebrates true and romantic love but also allows the display of the vent of irresistible desire, and the rustic expression of sex? How are carriers of genuine qing explicitly portrayed in these songs through their ingenious conversations and tricks in love affairs? And lastly, how do the songs in different ways showcase a vivid and dynamic picture of a sexually liberate and joy-oriented late Ming Suzhou

Sub-Optimal Moving Horizon Estimation in Feedback Control of Linear Constrained Systems

Moving horizon estimation (MHE) offers benefits relative to other estimation approaches by its ability to explicitly handle constraints, but suffers increased computation cost. To help enable MHE on platforms with limited computation power, we propose to solve the optimization problem underlying MHE sub-optimally for a fixed number of optimization iterations per time step. The stability of the closed-loop system is analyzed using the small-gain theorem by considering the closed-loop controlled system, the optimization algorithm dynamics, and the estimation error dynamics as three interconnected subsystems. By assuming incremental input/output-to-state stability ({\delta}- IOSS) of the system and imposing standard ISS conditions on the controller, we derive conditions on the iteration number such that the interconnected system is input-to-state stable (ISS) w.r.t. the external disturbances. A simulation using an MHE- MPC estimator-controller pair is used to validate the results.Comment: 6 page journal paper with 2 figure

The spin measurement of MAXI J1348-630 using the Insight-HXMT data

We report the results of fitting Insight-HXMT data to the black hole X-ray binary MAXI J1348-430, which was discovered on January 26th, 2019, with the Gas Slit Camera (GSC) on-board MAXI. Several observations at the beginning of the first burst were selected, with a total of 10 spectra. From the residuals of fits using disk plus power law models, X-ray reflection signatures were clearly visible in some of these observations. We use the state-of the-art relxill series reflection model to fit six spectra with distinct reflection signatures and a joint fit to these spectra. In particular, we focus on the results for the black hole spin values. Assuming Rin = RISCO, the spin parameter is constrained to be 0.82+0.04-0.03 with 90% confidence level (statistical only).Comment: Revisions to MNRAS are submitted, and comments are welcome

Gtsf1 is essential for proper female sex determination and transposon silencing in the silkworm, Bombyx mori

Sex determination pathways are astoundingly diverse in insects. For instance, the silk moth Bombyx mori uniquely use various components of the piRNA pathway to produce the Fem signal for specification of the female fate. In this study, we identified BmGTSF1 as a novel piRNA factor which participates in B. mori sex determination. We found that BmGtsf1 has a distinct expression pattern compared to Drosophila and mouse. CRISPR/Cas9 induced mutation in BmGtsf1 resulted in partial sex reversal in genotypically female animals by shifting expression of the downstream targets BmMasc and Bmdsx to the male pattern. As levels of Fem piRNAs were substantially reduced in female mutants, we concluded that BmGtsf1 plays a critical role in the biogenesis of the feminizing signal. We also demonstrated that BmGTSF1 physically interacted with BmSIWI, a protein previously reported to be involved in female sex determination, indicating BmGTSF1 function as the cofactor of BmSIWI. BmGtsf1 mutation resulted in piRNA pathway dysregulation, including piRNA biogenesis defects and transposon derepression, suggesting BmGtsf1 is also a piRNA factor in the silkworm. Furthermore, we found that BmGtsf1 mutation leads to gametogenesis defects in both male and female. Our data suggested that BmGtsf1 is a new component involved in the sex determination pathway in B. mori