Disruptive Potential of 3D Printing for Clothing and Textile Sector

The Maker Movement, also called the next industrial revolution, has been propelled by the rapid adoption of 3D printing. This rapid adoption is challenging the fashion discipline to rethink the strategies used in its supply chain. This research used a qualitative approach to explore whether 3D printing for apparel is a fad or reality. Four major themes of the disruptive influence of 3D printing on C&T emerged: streamlining the apparel supply chain; making apparel production sustainable; bring manufacturing to the U.S., and empowering consumers to create their designs. The researchers also asked interviewees about specific activities which need to take place before we can fully integrate 3D printing. Their responses addressed: exposure to the technology; teach 3D software and 3D modeling; collaborate with more experienced disciplines, and fundamentally think about ways to seamlessly integrate technology. Clearly, 3D printing is a challenge that presents C&T with opportunities to grow and develop

Food For Thought: Eating Habits of College Freshmen Examined Through the Socio-Ecological Model

The purpose of this project is to assess the dietary habits of college freshmen living in on-campus housing. A review of the literature regarding college student eating behavior is completed and examined through the socio-ecological model in order to identify key determinants affecting students’ meal choices. The second component of this project develops potential intervention plans specifically designed for UM students to improve eating habits campus wide

Maternal Health Practices, Beliefs and Traditions in Southeast Madagascar

Contextualising maternal health in countries with high maternal mortality is vital for designing and implementing effective health interventions. A research project was therefore conducted to explore practices, beliefs and traditions around pregnancy, delivery and postpartum in southeast Madagascar. Interviews and focus groups were conducted with 256 pregnant women, mothers of young children, community members and  stakeholders; transcripts were analysed to identify and explore  predetermined and emerging themes. A questionnaire was also conducted with 373 women of reproductive age from randomly selected households. Data was analysed using STATA. Results confirmed high local rates of maternal mortality and morbidity and revealed a range of traditional health care practices and beliefs impacting on women’s health seeking  behaviours. The following socio-cultural barriers to health were identified: 1) lack of knowledge, 2) risky practices, 3) delays seeking biomedical care, and 4) family and community expectations. Recommendations include educational outreach and behaviour change communications targeted for women, their partners and family, increased engagement with traditional midwives and healers, and capacity building of formal health service providers. (Afr J Reprod Health 2014; 18[3]: 101-117)Keywords: maternal health, pregnancy, birth, postpartum, Madagascar, socio-cultura

Optimal actuator design for the Euler-Bernoulli vibration model based on LQR performance and shape calculus

A method for optimal actuator design in vibration control is presented. The optimal actuator, parametrized as a characteristic function, is found by means of the topological derivative of the LQR cost. An abstract framework is proposed based on the theory for infinite-dimensional optimization of both the actuator shape and the associated control problem. A numerical realization of the optimality condition is developed for the actuator shape using a level-set method for topological derivatives. A numerical example illustrating the design of actuator for Euler-Bernoulli beam model is provided

Some remarks on a new exotic spacetime for time travel by free fall

This work is essentially a review of a new spacetime model with closed causal curves, recently presented in another paper (Class. Quantum Grav. \textbf{35}(16) (2018), 165003). The spacetime at issue is topologically trivial, free of curvature singularities, and even time and space orientable. Besides summarizing previous results on causal geodesics, tidal accelerations and violations of the energy conditions, here redshift/blueshift effects and the Hawking-Ellis classification of the stress-energy tensor are examined.Comment: 17 pages, 9 figures. Submitted as a contribution to the proceedings of "DOMOSCHOOL - International Alpine School of Mathematics and Physics, Domodossola 2018". Possible text overlaps with my previous work arXiv:1803.08214, of which this is essentially a review. Additional results concerning redshift/blueshift effects and the classification of the stress-energy tensor are presented her

Advances in pultiple-pulse radio-frequency-gradient imaging of solids

Magnetic resonance imaging (MRI) has become the premier tool for the non-destructive evaluation of soft tissue in living systems [1]. Established liquid-state MRI strategies are generally found to be inappropriate for the imaging of rigid solids, because the linewidth for nuclear magnetic resonance in solids is orders-of-magnitude larger than in liquids. Methods currently under development for the NMR imaging of solids either involve the use of very large (fringe-field) magnetic field gradients to encode spatial information over very short periods of time [2], or employ multiple-pulse line-narrowing techniques that prolong a solid’s apparent transverse relaxation time [3–7]. In the latter methods, the magnetic field gradients may be much weaker, but must generally be pulsed synchronously with the line-narrowing sequence. The benefits of implementing this are improved sensitivity and spectroscopic resolution

CacheZoom: How SGX Amplifies The Power of Cache Attacks

In modern computing environments, hardware resources are commonly shared, and parallel computation is widely used. Parallel tasks can cause privacy and security problems if proper isolation is not enforced. Intel proposed SGX to create a trusted execution environment within the processor. SGX relies on the hardware, and claims runtime protection even if the OS and other software components are malicious. However, SGX disregards side-channel attacks. We introduce a powerful cache side-channel attack that provides system adversaries a high resolution channel. Our attack tool named CacheZoom is able to virtually track all memory accesses of SGX enclaves with high spatial and temporal precision. As proof of concept, we demonstrate AES key recovery attacks on commonly used implementations including those that were believed to be resistant in previous scenarios. Our results show that SGX cannot protect critical data sensitive computations, and efficient AES key recovery is possible in a practical environment. In contrast to previous works which require hundreds of measurements, this is the first cache side-channel attack on a real system that can recover AES keys with a minimal number of measurements. We can successfully recover AES keys from T-Table based implementations with as few as ten measurements.Comment: Accepted at Conference on Cryptographic Hardware and Embedded Systems (CHES '17

Rural-urban Differences in Work Patterns Among Adults with Depressive Symptoms

This study addresses the issue of poor mental health among young to middle-career rural residents and how their employment may be affected. Using the National Longitudinal Survey of Youth (NLSY), a nationally representative survey of adults, the authors investigate how depressive symptoms affect employment patterns, and the extent to which such effects differ by rural and urban residence. Analysis of the data identified the rural sample as more likely to be married, have less education, are less likely to be black or Hispanic, and less likely to have health insurance than the urban sample. For both rural and urban subjects, individuals with depressive symptoms work less than those not depressed. Although the findings indicate no significant difference between depressed rural and urban residents in maintaining employment, questions remain about rural access to mental health services, such as employee assistance, productivity on the job, and the survival or coping strategies of rural workers with depressive symptoms

Electrostatics in a simple wormhole revisited

The electrostatic potential generated by a point charge at rest in a simple static, spherically symmetric wormhole is given in the form of series of multipoles and in closed form. The general potential which is physically acceptable depends on a parameter due to the fact that the monopole solution is arbitrary. When the wormhole has Z2-symmetry, the potential is completely determined. The calculation of the electrostatic self-energy and of the self-force is performed in all cases considered.Comment: 16 pages, no figure