A Comprehensive Study of Library-Led Textbook Affordability Initiatives in the United States

This study presents findings from a survey and interviews investigating library-led textbook affordability initiatives in the United States. The results document diverse considerations and divergences in workflows, challenges librarians face in establishing and maintaining textbook affordability programs, and the intersection of these initiatives with library and institutional strategies. Findings suggest that these programs have grown in number and scale over the past few years, accelerated by the COVID-19 pandemic lockdowns, and are sustained—even without permanent, designated funding—due to consistently positive perceptions about their impact on student success, just-in-time delivery, and alignment with library and institutional goals

A Comprehensive Study of Library-Led Textbook Affordability Initiatives in the United States

This study presents findings from a survey and interviews investigating library-led textbook affordability initiatives in the United States. The results document diverse considerations and divergences in workflows, challenges librarians face in establishing and maintaining textbook affordability programs, and the intersection of these initiatives with library and institutional strategies. Findings suggest that these programs have grown in number and scale over the past few years, accelerated by the COVID-19 pandemic lockdowns, and are sustained—even without permanent, designated funding—due to consistently positive perceptions about their impact on student success, just-in-time delivery, and alignment with library and institutional goals

Diverse Book Finders: Diversifying a children’s picture book collection by integrating acquisitions into a classroom experience

Two recent trends in collection development include finding new ways to bring patron voices into collection development and developing strategies for increasing the diversity and representation within collections. Indiana University Southeast (IU Southeast) Library recently developed a project that combined these two strategic directions by embedding an acquisition experience that used students enrolled in a sophomore block elementary education course to use the Diverse Book Finder (DBF) to select diverse picture books for the IU Southeast collection. While diversification strategies and projects around children’s picture book collections in academic libraries are nothing new, IU Southeast’s project is unique in its incorporating of students to participate in the selection and diversification of a collection, rather than relying on more traditional strategies driven by librarian or faculty selection. This case study focuses on the design of the project, the integration and embedding of the acquisition project into the education course, how the DBF and its collection were leveraged to enhance the learning experience, and the effect this experience had on the diversity of the Library collection and on the faculty, librarians, and students that were involved

Disposal of Household Wastewater in Soils of High Stone Content (1981-1983)

Four experimental filter fields were constructed with built-in monitoring equipment in Nixa soils. These soils contain many chert fragments and a fragipan about 60 cm below the soil surface. The fragipan restricts downward movement of water and is the designlimitingfeature. The four filter fields were: 1. A standard filter field, 76 cm deep. The bottom of the trench was in the fragipan. 2. A modified standard filter field, 30 cm deep. The bottom of the trench was above the fragipan. 3. A modified pressure filter field, 40 cm deep. The bottom of the trench was above the fragipan. In addition, a pressure-distribution system was used to insure uniform distribution of effluent in the trench. Inadvertently, this field was installed in a different soil, and the results cannot be compared directly with the other three. 4. Another modified pressure filter field with the bottom of the trench only 6 cm below the soil surface. Observation of these systems confirms that placing filter fields higher in the soil above the hydraulically limiting horizon results in improved hydraulic performance. The presence of the fragipan amplified the adverse effects attributable to climatic stress. The seepage beds which are higher in the soil profile are able to handle the effluent load and climate load with less danger of surfacing

Early childhood lung function is a stronger predictor of adolescent lung function in cystic fibrosis than early Pseudomonas aeruginosa infection

Pseudomonas aeruginosa has been suggested as a major determinant of poor pulmonary outcomes in cystic fibrosis (CF), although other factors play a role. Our objective was to investigate the association of early childhood Pseudomonas infection on differences in lung function in adolescence with CF

The Origin And Loss Of Periodic Patterning In The Turtle Shell

The origin of the turtle shell over 200 million years ago greatly modified the amniote body plan, and the morphological plasticity of the shell has promoted the adaptive radiation of turtles. The shell, comprising a dorsal carapace and a ventral plastron, is a layered structure formed by basal endochondral axial skeletal elements (ribs, vertebrae) and plates of bone, which are overlain by keratinous ectodermal scutes. Studies of turtle development have mostly focused on the bones of the shell; however, the genetic regulation of the epidermal scutes has not been investigated. Here, we show that scutes develop from an array of patterned placodes and that these placodes are absent from a soft-shelled turtle in which scutes were lost secondarily. Experimentally inhibiting Shh, Bmp or Fgf signaling results in the disruption of the placodal pattern. Finally, a computational model is used to show how two coupled reaction-diffusion systems reproduce both natural and abnormal variation in turtle scutes. Taken together, these placodal signaling centers are likely to represent developmental modules that are responsible for the evolution of scutes in turtles, and the regulation of these centers has allowed for the diversification of the turtle shell

Motor Controller System For Large Dynamic Range of Motor Operation

A motor controller system uses a rotary sensor with a plurality of signal conditioning units, coupled to the rotary sensor. Each of these units, which is associated with a particular range of motor output shaft rotation rates, generate a feedback signal indicative of the position of the motor s output shaft. A controller (i) converts a selected motor output shaft rotation rate to a corresponding incremental amount of rotational movement for a selected fixed time period, (ii) selects, at periodic completions of the selected fixed time period, the feedback signal from one of the signal conditioning units for which the particular range of motor output shaft rotation rates associated therewith encompasses the selected motor output shaft rotation rate, and (iii) generates a motor drive signal based on a difference between the incremental amount of rotational movement and the feedback signal from the selected one of the signal conditioning Units

Disposal of Household Wastewater in Soils of High Stone Content (1977-1980)

Two experimental septic tank filter fields were constructed with built-in monitoring equipment in Nixa soils. These soils contain many chert fragments and a fragipan about 60 cm deep which restricts downward water movement and is the design-limiting feature. The standard filter field (76 cm deep) was built into the fragipan and the modified standard filter field (30 cm deep) was placed above it. During 30 months\u27 observation, the modified standard performed better than the standard filter field. Maximum rise of effluent in the standard and modified standard came within 11 and 19 cm of the soil surface, respectively. Performance of these systems indicates filter fields should be designed to function during climatic stresses, i.e. when the soil has a maximum hydraulic load and surfacing may occur. Filter fields should be designed to withstand a stress period of specified intensity. The filter fields in this study were observed under less than normal stress. Therefore, their long range performance is less clear. Our observations indicate that filter field performance is related more to rates of water movement than to stone content. Major influences on filter field performance are rates and directions of water movement, stress period intensity, designs, and construction techniques

Antifreeze protein mimetic metallohelices with potent ice recrystallization inhibition activity

Antifreeze proteins are produced by extremophile species to control ice formation and growth, and they have potential applications in many fields. There are few examples of synthetic materials which can reproduce their potent ice recrystallization inhibition property. We report that self-assembled enantiomerically pure, amphipathic metallohelicies inhibited ice growth at just 20 μM. Structure-property relationships and calculations support the hypothesis that amphipathicity is the key motif for activity. This opens up a new field of metallo-organic antifreeze protein mimetics and provides insight into the origins of ice-growth inhibition