Ethics After Theory

Today, architectural theory has atrophied. Despite a perceived need for different theoretical ways of clarifying, explaining and understanding the complex phenomena of contemporary architectural production prior to a designer's intervention, there are few existing theoretical frameworks. Without either the descriptive or projective enablement by theory, conscientious and critical practices in architecture will have few alternatives against the tide of neoliberal city-making. In this paper, I make a pun of Speaks's (2006) paper titled, ‘Intelligence after theory' by arguing that while (design) intelligence is necessary, it is however not sufficient. Ethics is also needed in architecture. Through a brief restatement of a canonical debate in the critical school of architectural theory, I argue why ethics is needed in architecture, and how ethics could be further developed through theory and theorization

Polarization gaps in spiral photonic crystals

We studied the optical properties of a dielectric photonic crystal structure with spirals arranged in a hexagonal lattice. The dielectric constant of the material is 9 and the filling ratio is 15.2%. We found that this kind of structure exhibits a significant polarization gap for light incident along the axis of the spirals. The eigenmodes inside the polarization gap are right-hand (left-hand) circularly polarized depending on the whether the spirals are left-handed (right-handed). The transmission spectrum of a slab of such a structure has been calculated and matches well with the analysis of the eigenmodes.Comment: 6 pages, 7 figure

Chiral microstructures (spirals) fabrication by holographic lithography

We present an optical interference model to create chiral microstructures (spirals) and its realization in photoresist using holographic lithography. The model is based on the interference of six equally-spaced circumpolar linear polarized side beams and a circular polarized central beam. The pitch and separation of the spirals can be varied by changing the angle between the side beams and the central beam. The realization of the model is carried out using the 325 nm line of a He-Cd laser and spirals of sub-micron size are fabricated in photoresist.Comment: 6 page

High Fidelity Simulations for Unsteady Flow Through the Orbiter LH2 Feedline Flowliner

High fidelity computations were carried out to analyze the orbiter M2 feedline flowliner. Various computational models were used to characterize the unsteady flow features in the turbopump, including the orbiter Low-Pressure-Fuel-Turbopump (LPFTP) inducer, the orbiter manifold and a test article used to represent the manifold. Unsteady flow originating from the orbiter LPFTP inducer is one of the major contributors to the high frequency cyclic loading that results in high cycle fatigue damage to the gimbal flowliners just upstream of the LPFTP. The flow fields for the orbiter manifold and representative test article are computed and analyzed for similarities and differences. An incompressible Navier-Stokes flow solver INS3D, based on the artificial compressibility method, was used to compute the flow of liquid hydrogen in each test article

The Integration and Appraisal of Electronic Medical Records (EMR) in Cotabato Regional and Medical Center

This research investigates the adoption, implementation, and overall satisfaction of electronic medical records (EMR) in the Cotabato Regional and Medical Center (CRMC). A purposive sampling method was utilized in the recruitment of the participants after getting clearance from its ethical review board. This study engaged 16 participants from CRMC: administrators, health personnel, and non-health personnel. The participants responded in a google survey form with structured and unstructured items that centered on the what, when, how, and why of the adoption of the implementation of the EMR and their overall satisfaction. EMR adoption in CRMC is associated with the mandate from the Department of Health’s initiative to modernize the health care system in the Philippines. The hospital’s top administration initiated the adoption with consultations from the different stakeholders in the hospital. Several consultations were conducted, and training of both healthcare and nonhealthcare personnel were conducted to prepare the hospital system. Despite these efforts, several issues confronted the efficient implementation of EMR in the recording, archiving, and retrieval of the medical records which include: internet connectivity, lack of skilled manpower to handle the EMR system, financing issues, and preference of other personnel to the “manual process” of doing things. Interestingly, the level of overall satisfaction on the implementation of EMR remains to be high. Improved infrastructure, more training, and recruitment of skilled staff are recommended to optimize the utilization of EMR

BDNF val66met polymorphism is associated with modified experience-dependent plasticity in human motor cortex.

Motor training can induce profound physiological plasticity within primary motor cortex, including changes in corticospinal output and motor map topography. Using transcranial magnetic stimulation, we show that training-dependent increases in the amplitude of motor-evoked potentials and motor map reorganization are reduced in healthy subjects with a val66met polymorphism in the brain-derived neurotrophic factor gene (BDNF), as compared to subjects without the polymorphism. The results suggest that BDNF is involved in mediating experience-dependent plasticity of human motor cortex

Resolving spin, valley, and moir\'e quasi-angular momentum of interlayer excitons in WSe2/WS2 heterostructures

Moir\'e superlattices provide a powerful way to engineer properties of electrons and excitons in two-dimensional van der Waals heterostructures. The moir\'e effect can be especially strong for interlayer excitons, where electrons and holes reside in different layers and can be addressed separately. In particular, it was recently proposed that the moir\'e superlattice potential not only localizes interlayer exciton states at different superlattice positions, but also hosts an emerging moir\'e quasi-angular momentum (QAM) that periodically switches the optical selection rules for interlayer excitons at different moir\'e sites. Here we report the observation of multiple interlayer exciton states coexisting in a WSe2/WS2 moir\'e superlattice and unambiguously determine their spin, valley, and moir\'e QAM through novel resonant optical pump-probe spectroscopy and photoluminescence excitation spectroscopy. We demonstrate that interlayer excitons localized at different moir\'e sites can exhibit opposite optical selection rules due to the spatially-varying moir\'e QAM. Our observation reveals new opportunities to engineer interlayer exciton states and valley physics with moir\'e superlattices for optoelectronic and valleytronic applications