cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Far-IR Characterization of 24 micron Selected Galaxies at 0
Creators: name: Lee, Nicholas
name: Floc'h, Emeric Le
name: Sanders, D. B.
name: Frayer, D. T.
name: Arnouts, Stephane
name: Ilbert, Olivier
name: Aussel, Hervé
name: Salvato, Mara
name: Scoville, N. Z.
name: Kartaltepe, Jeyhan S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a study of the average properties of luminous infrared galaxies detected directly at 24 $μ$m in the COSMOS field using a median stacking analysis at 70$μ$m and 160 $μ$m. Over 35000 sources spanning 0
description: 21 pages, 6 figures, accepted for publication in the Astrophysical Journal
EFFECT  OF LEVEL AND  TIME  OF  NITROGEN FERTILIZER APPLICATION ON GROWTH, YIELD  AND  YIELD  COMPONENTS  OF MAIZE (Zea mays L.) AT ARBA MINCH, SOUTHERN ETHIOPIA
Creators: name: KEYRO ASSEFA DEMISSE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Crop nutrient utilization efficiency could be enhanced with optimum level and right time of
application. A field experiment was conducted at Arba Minch Southern  Ethiopia on maize
hybrid  variety,  BH  140, during 2016 cropping to  determine the  effect  of level  and  time  of
nitrogen  fertilizer  application  on  growth,  yield, yield components and economics of  maize
cultivation. The experiment consisted of six levels of nitrogen (N) (0, 23,46,69,92 and 115 kg
N ha
-1
) and four times of N application (½ dose at sowing + ½ dose of N at 40 days after
sowing;  ½  dose of  N at 40  days  after  sowing + ½  dose of N at  tasseling, ¼  dose of  N at
sowing + ½ dose of N at 40 days after sowing + ¼ dose of N at tasseling, and full dose of N
at 40 days after sowing). The experiment was laid out in Randomized Complete Block Design
with  three  replications. Data  was  collected  on  days  to  tasseling,  days  to  silking, days  to
maturity, leaf  area  index, plant  height, number  ear  per  plant,  ear  height, dry  matter, ear
length, number of kernels per ear, hundred kernels weight, grain yield and harvest index. The
effect  of  N  level  was  highly  significant  (P<0.05)  for  phenological  parameters,  growth
parameters as  well  as yield  and  yield components.  As for  time  of N application,  it had
significant effect on days  to  tasseling, leaf  area  index, days  to  maturity, plant  height, ear
length, number of ear per plant, hundred kernels weight and harvest index.  The interaction
between level and time of nitrogen application was significant for days to silking, number of
kernels per ear and grain yield. High values of all growth and yield parameters including
grain yield, were obtained when N application was split as ¼ dose at sowing + ½ dose at 40
days  after  sowing  + ¼  dose  at  tasseling. The  highest  grain  yield  (9036.7  kg  ha-1)  was
recorded  the combination 69  kg  N  ha
-1
with  three  split  application,  while  the  lower  grain
yield  (4316  kg  ha-1
)  was  recorded  from  the  control  treatment. Grain  yield  showed  highly
significant and positive linear correlations with all the parameters except days to maturity.
The  highest  economic benefit  (51,843  Birr  ha
-1
)  and  higher  acceptable  (2018%)  were
obtained from applying 69 kg N ha
-1
in three splits as ¼ dose at sowing +  ½ dose at 40 days
after sowing + ¼ dose at tasseling. Therefore, it is concluded that split application of 69 kg
N ha
-1
(¼ dose at sowing + ½ dose at 40 days after sowing + ¼ dose at tasseling) could be
appropriate  to  attain  higher  and  economical  maize  production  in  Arba  Minch.  Thus,
applying 69 kg N ha-1
with three split application is promising to come to the conclusion and
the study is required to be repeated for one more season.
EFFECTS OF INTRA ROW SETTS SPACING ON LODGING,  IELD AND YIELD COMPONENTS OF SUGARCANE VARIETIES  accharum sp. hybrid) AT KURAZ SUGAR PROJECT, SOUTH OMO  ZONE, ETHIOPIA
Creators: name: TEREFE MUNTAZ MOLLA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Sugarcane production is affected by numerous factors which subsequently reduce cane
and sugar yield. Among those constraints planting geometry is  the most important one.
To solve the problem, regarding to intra row setts spacing, research findings should be
taken. However, research out puts concerning to this aspects is not  available at Kuraz
sugar project. Therefore, effects of intra row setts spacing on selected traits were carried
out at this project with the objective of to determe the effecs of intra row setts spacing on
lodging, cane and yield components of sugarcane varieties during the growing seasons of
2017/2018. The experiment was  conducted in split plot design with four sugarcane
varieties, B 52 298, N Co 334, C 86/112 and N 14 as main plots and four intra row setts
spacing, 5cm overlapping of setts, end to end  of  setts, 10cm and 20cm space between
three budded setts as sub plots, replicated five times. Plot size represented 4 rows of 5m
length with inter- row distance of 1.45m. At closer intra- row spacing number of tillers,
cane forming stalks, millable canes, number of internodes in cane, cane length and cane
yield were recorded more than wider setts spacing. There were a significant differences
(P<0.05) among varieties for these characters. Cane weight and cane girth was more at
widest intra row sett spacing with significant difference for cane weight. Intra row setts
spacing had no significant effect on quality characteristics, Brix, pol and purity % juice,
recoverable sugar % cane and sugar yield. Variety, N Co 334 had higher Brix and pol %
juice and sugar recovery % cane than other varieties. Varieties differed in cane and
sugar yields with highest cane yield in variety, N14 and maximum sugar yield in obtained
in varieties, N 14 and N Co 334. Intra-row setts spacing, except 8-month age of crop, had
positive impact on cane lodging  from 9  to 11 month. From the results it recommended
that closer intra row sett spacing may be used for high cane and sugar yields at Kuraz
sugar project, but alternatively it was recommended to use 10 cm between setts, without
reducing cane and sugar yield.  Cane lodging was  more  a varietal characteristic.
Varieties with high cane and sugar yields and resistance to lodging may be planted at
Kuraz sugar project.
Calculus identities for generalized simplex gradients : rules and applications
Creators: name: Jarry-Bolduc, Gabriel
Publisher: name: University of British Columbia
Year: 2019

description: Simplex gradients, essentially the gradient of a linear approximation, are a popular tool in derivative-free optimization (DFO). In 2015, a product rule, a quotient rule and a sum rule for simplex gradients were introduced by Regis. Unfortunately, those calculus rules only work under a restrictive set of assumptions. The purpose of this thesis is to provide new calculus rules that work in a wider setting. The rules place minimal assumptions on the functions involved and the interpolation sets. The rules further lead to an alternative approach to gradient approximation in situations where the rules could be applied. We analyze the new approach, provide error bounds, include some testing on numerical stability and accuracy.
A Counter Example to Theorems of Cox and Fine
Creators: name: Halpern, J. Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Cox's well-known theorem justifying the use of probability is shown not to hold in finite domains. The counterexample also suggests that Cox's assumptions are insufficient to prove the result even in infinite domains. The same counterexample is used to disprove a result of Fine on comparative conditional probability.
Recognition of Implicit Geographic Movement in Text
Creators: name: Pezanowski, Scott
name: Mitra, Prasenjit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Analyzing the geographic movement of humans, animals, and other phenomena is a growing field of research. This research has benefited urban planning, logistics, animal migration understanding, and much more. Typically, the movement is captured as precise geographic coordinates and time stamps with Global Positioning Systems (GPS). Although some research uses computational techniques to take advantage of implicit movement in descriptions of route directions, hiking paths, and historical exploration routes, innovation would accelerate with a large and diverse corpus. We created a corpus of sentences labeled as describing geographic movement or not and including the type of entity moving. Creating this corpus proved difficult without any comparable corpora to start with, high human labeling costs, and since movement can at times be interpreted differently. To overcome these challenges, we developed an iterative process employing hand labeling, crowd voting for confirmation, and machine learning to predict more labels. By merging advances in word embeddings with traditional machine learning models and model ensembling, prediction accuracy is at an acceptable level to produce a large silver-standard corpus despite the small gold-standard corpus training set. Our corpus will likely benefit computational processing of geography in text and spatial cognition, in addition to detection of movement.
Magneto-optic and electro-optic effects in electromagnetic and gravitational fields
Creators: name: Weng, Zi-Hua
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The magneto-optic effects and electro-optic effects are the essential optic effects, although their theoretical explanations are not unified in the classical electromagnetic theory. Describing with the algebra of octonions, the electromagnetic theory can derive the magneto-optic effects and electro-optic effects from the same one force definition in the paper. As well as the magneto-optic effect is deduced from the known force term, the electro-optic effect is from the new force term in the octonion space. This description method is different to that in the quantum theory as well as the index ellipsoid approach for the electro-optic effect. One more significant inference is that the gravitational field has an impact on the rotation of linearly polarized light, and then results in the similar birefringence for the transmitted light in the cosmic matter.
description: 20 pages, 6 figures. Abridged version to appear in Proceedings of PIERS 2011 in Marrakesh
title: ÐÐ±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ðº Ð²ÑÐ±Ð¾ÑÑ ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð·ÐµÐ¼Ð»ÐµÐ½Ð¸Ñ Ð¿ÐµÑÐµÑ Ð¾Ð´Ð½ÑÑ Ð¿ÑÐ½ÐºÑÐ¾Ð² ÐºÐ°Ð±ÐµÐ»ÑÐ½Ð¾-Ð²Ð¾Ð·Ð´ÑÑÐ½ÑÑ Ð»Ð¸Ð½Ð¸Ð¹ 6-500 ÐºÐ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Justification of requirements for the choice of grounding resistance of transition points of cable-overhead lines of 6-500 kV
Creators: name: ÐÑÐµÑÐºÐ¾ÑÐµÐ¹, ÐÐ»Ð°Ð´Ð¸ÑÐ»Ð°Ð²
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÐÐ°Ð·ÐµÐ¼Ð»ÑÑÑÐ¸Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°
ÐÐ°Ð±ÐµÐ»ÑÐ½ÑÐµ Ð»Ð¸Ð½Ð¸Ð¸
Ð¿ÐµÑÐµÑ Ð¾Ð´Ð½ÑÐ¹ Ð¿ÑÐ½ÐºÑ
ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ðµ Ð·Ð°Ð·ÐµÐ¼Ð»ÐµÐ½Ð¸Ñ

description: Ð¢ÐµÐ¼Ð° ÐÐÐ  Ð¾ÑÐ½Ð¾ÑÐ¸ÑÑÑ Ðº Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð°Ð¼ ÐºÐ°Ð±ÐµÐ»ÑÐ½Ð¾-Ð²Ð¾Ð·Ð´ÑÑÐ½ÑÑ Ð»Ð¸Ð½Ð¸Ð¹, Ð° Ð¸Ð¼ÐµÐ½Ð½Ð¾ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ðº ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð·ÐµÐ¼Ð»ÐµÐ½Ð¸Ñ Ð¿ÐµÑÐµÑÐ¾Ð´Ð½ÑÑ Ð¿ÑÐ½ÐºÑÐ¾Ð². ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ°, Ð¸Ð¼ÐµÑÑÐ¸ÑÑÑ Ð½Ð¾ÑÐ¼Ð°ÑÐ¸Ð²Ð½ÑÑ Ð´Ð¾ÐºÑÐ¼ÐµÐ½ÑÐ¾Ð². ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ ÑÐ°ÐºÑÐ¾ÑÑ, Ð¸ÑÑÐ¾Ð´Ñ Ð¸Ð· ÐºÐ¾ÑÐ¾ÑÑÑ Ð´Ð¾Ð»Ð¶Ð½Ñ, ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°ÑÑÑÑ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ Ðº ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð·ÐµÐ¼Ð»ÐµÐ½Ð¸Ñ. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð¼ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐµ ÐÐÐ¢Ð . ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐ°ÑÑÐµÑÐ° Ð²ÑÑÐºÐ°Ð·Ð°Ð½Ñ Ð¿ÑÐµÐ´Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¿Ð¾ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ Ð¿ÑÐµÐ´ÑÑÐ²Ð»ÑÑÑ Ðº ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð·ÐµÐ¼Ð»ÐµÐ½Ð¸Ñ Ð¿ÐµÑÐµÑÐ¾Ð´Ð½ÑÑ Ð¿ÑÐ½ÐºÑÐ¾Ð² ÐºÐ°Ð±ÐµÐ»ÑÐ½Ð¾-Ð²Ð¾Ð·Ð´ÑÑÐ½Ð¾Ð¹ Ð»Ð¸Ð½Ð¸Ð¸.
description: The topic of work relates to the problems of cable-overhead lines, namely the justification of the requirements for the grounding resistance of transition points. An assessment of the existing regulatory documents. The factors are determined on the basis of which the requirements for grounding resistance should be formed. The calculation was performed in the EMTR software package. On the basis of the calculation, assumptions are made on the requirements that must be presented to the earthing resistance of cable-to-air transition points.
Feedback as a space for academic social practice in doctoral writing groups
Creators: name: Pretorius, Lynette
name: Chakraborty, Deya
name: Soyoof, Ali
name: Moharami, Mehdi
name: Utami, Ade Dwi
name: Zeng, Shaoru
name: Cong-Lem, Ngo
name: Hradsky, Danielle
name: Maestre, Jacky-Lou
name: Foomani, Elham Mohammadi
Publisher: name: Monash University
Year: 2022
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: ObjectiveWhile academic writing is considered a core competency in academia, academic writing anxiety is ubiquitous in doctoral student cohorts. Doctoral writing groups provide a space for participants to learn from each other’s writing through the peer feedback process. In this conceptual review, we explore the dialogic nature of the peer feedback process in doctoral writing groups.
MethodsThe findings in this study are based on thematic analyses of published peer-reviewed research using standard word processing, annotation, and referencing software.
ResultsWe focus on how the space of security and trust that is created in doctoral writing groups encourages participants to explore writing as a social practice. Through the relationships built in this type of interactive community, doctoral writing group participants discover and explore the discourses of scholarly communication. Furthermore, doctoral writing groups foster students’ ability to navigate the often-times implicit narratives of academia, thereby building student agency.
ConclusionWe argue, therefore, that feedback in doctoral writing groups should be viewed as a space of academic social practice.
ImplicationsThis study underscores the importance of embedding opportunities for peer-based learning into doctoral programmes not only in the fields of educational and developmental psychology, but also in other disciplines more broadly.
KEY POINTS(1) Academic writing is an essential skill for PhD graduates.(2) Academic writing anxiety is ubiquitous in PhD student cohorts.(3) Doctoral writing groups provide spaces for PhD students to develop their academic writing.(4) Learning in doctoral writing groups occur through a dialogic peer feedback process.(5) Doctoral writing groups encourage PhD students to see writing as a social practice.(6) Doctoral writing groups foster the agency of PhD students by helping them navigate the implicit narratives of academia.
title: Έλεγχος της εγκυρότητας και αξιοπιστίας των μετρήσεων της κλίμακας Γενικής Αυτο-αποτελεσματικότητας (GSE) σε Έλληνες ενήλικες με άσθμα
title: Validity and Reliability Evidence of the General Self-Efficacy scale (GSE) in Greek adults with asthma
titleType: AlternativeTitle
Creators: name: Σμυρλή, Ελένη
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Αυτο-αποτελεσματικότητα
Άσθμα
Κλίμακα GSE
Εγκυρότητα
Αξιοπιστία

description: Σκοπός: Η παρούσα μελέτη σχεδιάστηκε για να εξετάσει την εγκυρότητα και αξιοπιστία των μετρήσεων της κλίμακας γενικής αυτο-αποτελεσματικότητας (GSE) σε έλληνες ενήλικες με άσθμα. Μέθοδος: Σε δείγμα 50 ασθενών με άσθμα, εξετάσθηκε η δομική εγκυρότητα (μέθοδος ανάλυσης παραγόντων και μέθοδος της διαφοράς των ομάδων), η εγκυρότητα κριτηρίου (συγχρονική και προβλεπτική εγκυρότητα) καθώς και η εσωτερική συνοχή της κλίμακας GSE. Αποτελέσματα: Η διερευνητική ανάλυση παραγόντων ανέδειξε δομή δύο (2) παραγόντων για την κλίμακα GSE (αυτο-αποτελεσματικότητα δράσης και αυτο-αποτελεσματικότητα αντιμετώπισης/διαχείρισης με ιδιοτιμή 4.13 και 1.94 αντίστοιχα) που ερμήνευσε το 60.70% της συνολικής διακύμανσης. Η κλίμακα GSE έδειξε υψηλή εσωτερική συνοχή (Cronbach’s alpha = 0.84). Υψηλότερες βαθμολογίες της GSE παρατηρήθηκαν για τους ασθενείς με ελεγχόμενο άσθμα συγκριτικά με αυτούς με μη ελεγχόμενο άσθμα (p <0.001), για τους ασθενείς που δεν έκαναν υπεραερισμό σε σύγκριση με αυτούς με υπεραερισμό (p <0.001) και για τους ασθενείς με ήπιο άσθμα συγκριτικά με αυτούς με μέτριο και σοβαρό άσθμα (p <0.001). Ο έλεγχος της συγχρονικής εγκυρότητας έδειξε μέτριες έως υψηλές θετικές συσχετίσεις μεταξύ της συνολικής βαθμολογίας της GSE με τον FEV1% (r = 0.49, p <0.01), το 6MWDT (r = 0.80, p <0.01) και το ACT (r = 0.81, p <0.01), ενώ βρέθηκαν χαμηλές έως υψηλές αρνητικές συσχετίσεις μεταξύ της συνολικής βαθμολογίας της GSE με την ηλικία (r = -0.29, p <0.05), το NQ (r = -0.75, p <0.01) και την κλίμακα Borg (r = -0.77, p <0.01). Η ανάλυση της πολλαπλής γραμμικής παλινδρόμησης ανέδειξε παράγοντα πρόβλεψης της γενικής αυτο-αποτελεσματικότητας (GSE) τη μέγιστη διανυόμενη απόσταση σε έξι (6) λεπτά (6MWDT) (Beta = 0.56, p <0.001) για το συγκεκριμένο δείγμα ασθενών με άσθμα. Συμπεράσματα: Η κλίμακα GSE στην παρούσα έρευνα έδωσε ενδείξεις εγκυρότητας και αξιοπιστίας των μετρήσεών της για το συγκεκριμένο δείγμα ελλήνων με άσθμα.
SIDIS in the target fragmentation region: polarized and transverse momentum dependent fracture functions
Creators: name: Anselmino, Mauro
name: Barone, Vincenzo
name: Kotzinian, Aram
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The target fragmentation region of semi-inclusive deep inelastic scattering is described at leading twist, taking beam and target polarizations into account. The formalism of polarized and transverse-momentum dependent fracture functions is developed and the observables for some specific processes are presented.
description: 18 pages, 2 figures. Some equations modified and text shortened; main conclusions unchanged
Immune biomarkers in breast cancer pathology specimens : characterization and clinical implications
Creators: name: Burugu, Samantha
Publisher: name: University of British Columbia
Year: 2019

description: Immunotherapy is dramatically changing the landscape of cancer treatment and is becoming incorporated into the standard of care for some tumor types. Until recently, breast cancer has not been generally considered particularly immunogenic. However, breast cancer is a heterogeneous disease and increasing evidence suggests that patients with basal-like breast cancer, an aggressive subtype lacking targeted therapy options, may be amenable to immunotherapy. My research goals have included the investigation and clinical characterization of two emerging targetable immune checkpoint biomarkers: lymphocyte-activation gene 3 (LAG-3) and the T-cell Immunoglobulin and Mucin domain-containing molecule 3 (TIM-3), by applying immunohistochemistry to a well-annotated tissue microarray cohort of 3,992 breast cancers. As an additional research goal, I evaluated a novel in situ multiplex biomarker assessment method (Nanostring-based digital spatial profiling-DSP) for its compatibility with breast cancer tissue microarrays, to generate immune profiles from patient surgical specimens. I report that the expression of LAG-3 or TIM-3 on intra-epithelial tumor-infiltrating lymphocytes (iTILs) was observed in a minority of cases (11%) in the whole cohort, but was significantly enriched in basal-like breast cancers (33% and 28% of basal-like breast cancers being infiltrated with LAG-3+ and TIM-3+iTILs, respectively). Furthermore, I found that LAG-3+iTILs and TIM-3+iTILs were present in breast cancers co-infiltrated with established immunotherapy targets (program cell death-1/PD-1 and its ligand, PD-L1). In multivariate analyses, LAG-3+iTILs or TIM-3+iTILs were independent favorable prognostic factors in breast cancer patients. In the last part of the thesis, I profiled the tumor immune microenvironment of two basal-like-enriched breast cancer cohorts, quantifying the expression of 31 immuno-oncology biomarkers using DSP. I then validated the digital counts for CD8 and PD1 by comparing with immunohistochemistry, and CD45 digital counts by comparing with hematoxylin & eosin-stained stromal TILs counts. Lastly, I identified a 4-biomarker signature indicative of a pre-existing immunity in breast cancer patients. The body of work presented here may help guide the selection of breast cancer patients for clinical trial evaluation of emerging immunotherapy agents. Furthermore, I show that digital spatial profiling technology can efficiently and quantitatively profile immune expression on breast cancer patient specimens using only a tiny fraction from precious tumor samples.
The Role and Status of Food and Nutrition Literacy in Canadian School Curricula
Creators: name: Anderson, Heather
name: Falkenberg, Thomas
Publisher: name: Alberta Journal of Educational Research
Year: 2016

description: The obesity epidemic in North America has given greater attention to food and nutrition literacy in Canadian schools. However, the review of relevant literature on food and nutrition literacy reveals quite a range of understandings of what such literacy means. This raises the question of what understanding of food and nutrition literacy is actually represented in Canadian curriculum documents, considering that it is the curriculum that primarily drives teaching and learning in schools? Using a document analysis approach, the study reported upon in this article enquires into this very question. While the study finds a range of conceptualizations represented across provinces, territories and subject areas, it identifies the preferred framing of food and nutrition literacy as being related to food consumption and health at the individual level. L’épidémie d’obésité en Amérique du nord a attiré une plus grande attention vers les connaissances en nutrition et en alimentation dans les écoles. Par contre, un examen de la littérature sur le sujet a révélé toute une gamme d’interprétations de ce qu’est une éducation en nutrition et en alimentation. La question suivante se pose alors : quelle représentation fait-on de la nutrition et l’alimentation dans les programmes d’études au Canada, le curriculum étant surtout ce qui véhicule ces connaissances? S’appuyant sur une approche d’analyse de documents, la présente étude s’est penchée sur cette question. Les résultats indiquent qu’il existe un éventail de conceptualisations selon les provinces, les territoires et la matière à l’étude, et que le cadre préféré pour aborder la consommation alimentaire et la santé repose sur l’individu.
description: Alberta Journal of Educational Research, Vol. 62 No. 1 (2016): Spring
A New Framework for Join Product Skew
Creators: name: Afrati, Foto
name: Kyritsis, Victor
name: Lekeas, Paraskevas V.
name: Souliou, Dora
Publisher: name: arXiv
Year: 2010
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Different types of data skew can result in load imbalance in the context of parallel joins under the shared nothing architecture. We study one important type of skew, join product skew (JPS). A static approach based on frequency classes is proposed which takes for granted the data distribution of join attribute values. It comes from the observation that the join selectivity can be expressed as a sum of products of frequencies of the join attribute values. As a consequence, an appropriate assignment of join sub-tasks, that takes into consideration the magnitude of the frequency products can alleviate the join product skew. Motivated by the aforementioned remark, we propose an algorithm, called Handling Join Product Skew (HJPS), to handle join product skew.
Experimental Realization of a Four-Photon Seven-Qubit Graph State for One-Way Quantum Computation
Creators: name: Lee, Sang Min
name: Park, Hee Su
name: Cho, Jaeyoon
name: Kang, Yoonshik
name: Lee, Jae Yong
name: Kim, Heonoh
name: Lee, Dong-Hoon
name: Choi, Sang-Kyung
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose and demonstrate the scaling up of photonic graph state through path qubit fusion. Two path qubits from separate two-photon four-qubit states are fused to generate a two-dimensional seven-qubit graph state composed of polarization and path qubits. Genuine seven-qubit entanglement is verified by evaluating the witness operator. Six qubits from the graph state are used to execute the general two-qubit Deutsch-Jozsa algorithm with a success probability greater than 90%.
description: 4 pages. Supplementary Material is included in the zip file
Comprehensive Saliency Fusion for Object Co-segmentation
Creators: name: Chhabra, Harshit Singh
name: Jerripothula, Koteswar Rao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Object co-segmentation has drawn significant attention in recent years, thanks to its clarity on the expected foreground, the shared object in a group of images. Saliency fusion has been one of the promising ways to carry it out. However, prior works either fuse saliency maps of the same image or saliency maps of different images to extract the expected foregrounds. Also, they rely on hand-crafted saliency extraction and correspondence processes in most cases. This paper revisits the problem and proposes fusing saliency maps of both the same image and different images. It also leverages advances in deep learning for the saliency extraction and correspondence processes. Hence, we call it comprehensive saliency fusion. Our experiments reveal that our approach achieves much-improved object co-segmentation results compared to prior works on important benchmark datasets such as iCoseg, MSRC, and Internet Images.
description: Published in IEEE ISM 2021. Please cite this paper in the following manner. H. S. Chhabra and K. Rao Jerripothula, "Comprehensive Saliency Fusion for Object Co-segmentation," 2021 IEEE International Symposium on Multimedia (ISM), 2021, pp. 107-110, doi: 10.1109/ISM52913.2021.00026
Engineered biosynthesis of cyclotides
Creators: name: Handley, Thomas N. G.
name: Hyon-Xhi Tan
name: Rutledge, Malcolm T.
name: Brewitz, Hans Henning
name: Tyndall, Joel D. A.
name: Kleffmann, Torsten
name: Margi I. Butler
name: Poulter, Russell T. M.
name: Wilbanks, Sigurd M.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Inorganic Chemistry
subject: Plasma Physics

description: A system based on cyanobacterial split inteins, SICLOPPs (Split Intein Circular Ligation of Proteins and Peptides), has been used to synthesise a small natively cyclic plant protein, kalata B1, and cyclised versions of the natively linear therapeutic peptides ziconotide and leconotide. The cyclic versions of these naturally linear peptides include linker sequences between their native termini to allow the correct tertiary structure to form. The native structure of each includes three disulphide bonds characteristic of knottins. Cyclic permutations of leconotide yielded different proportions of correctly spliced product, identifying an optimal splice site and revealing the influence of residues around the splice junction. The rate of splicing was manipulated to facilitate affinity purification prior to intein-mediated removal of the affinity tag.
Teachers’ Understandings of Critical and Higher Order Thinking and What This Means for Their Teaching and Assessments
Creators: name: Schulz, Henry W
name: FitzPatrick, Beverly
Publisher: name: Alberta Journal of Educational Research
Year: 2016

description: Critical and higher order thinking is essential to education, but it is not clear what teachers understand this to mean and what role this has in their instruction. We interviewed 38 teachers in Kindergarten to Grade 9 classrooms from 14 schools in Newfoundland and Labrador, Canada, to obtain their understandings of critical and higher order thinking in social studies and science, and how this affects instruction and assessment. The teachers believed that higher order thinking was important for all students, and attempted to teach thinking; however, they were less sure of how they might assess thinking. The teachers indicated uncertainty about what higher order thinking means, and believed they were not well prepared to teach or assess higher order thinking. L’esprit critique et les habiletés supérieures de la pensée sont des éléments essentiels de l’éducation; pourtant, il n’est pas clair si les enseignants comprennent ces concepts ou le rôle que jouent ceux-ci dans leur enseignement. Nous avons interrogé 38 enseignants de la maternelle à la 9e année et provenant de 14 écoles à Terre-Neuve-et-Labrador, au Canada, de sorte à apprendre comment ils concevaient l’esprit critique et les habiletés supérieures de la pensée en études sociales et en science, et dans quelle mesure leur perception affectait l’enseignement et l’évaluation. Les enseignants croyaient que les habiletés supérieures de la pensée étaient importantes pour tous les élèves et ils tentaient d’enseigner la réflexion ; toutefois, ils étaient moins certains quant à la façon d’évaluer celle-ci. Les enseignants ont manifesté une incertitude quant à la définition des habiletés supérieures de la pensée et estimaient qu’ils n’étaient pas bien préparés pour les enseigner ou les évaluer.
description: Alberta Journal of Educational Research, Vol. 62 No. 1 (2016): Spring
Celebrating the contributions of Govindjee after his retirement: 1999–2020
Creators: name: Stirbet, Alexandrina
name: Björn, Lars Olof
name: Shevela, Dmitry
name: Allakhverdiev, Suleyman I.
name: Nonomura, Arthur
name: Zhu, Xin-Guang
name: Dušan Lazár
name: Pareek, Ashwani
name: Győző Garab
name: Eaton-Rye, Julian J.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Science Policy
subject: Plant Biology
subject: Computational Biology

description: Govindjee, Professor Emeritus of Biochemistry, Biophysics and Plant Biology at the University of Illinois at Urbana-Champaign since 1999, is renowned for his pioneering work in the light reactions of photosynthesis and important accomplishments as educator, editor, historian and advocate of photosynthesis. In his honour, we review his contributions over the last twenty years, which were often achieved in collaboration with scientists working in laboratories around the world. We start with a short presentation about Govindjee’s career and continue with a section highlighting his passion and dedication to teach the younger generations of students and researchers about photosynthesis. His research work is grouped under different areas, including primary photochemistry; the relationship of chlorophyll a fluorescence to photosynthesis; short time-scale regulation processes of photosynthesis; studies toward improving photosynthesis and biomass yields; and, mathematical modelling of photosynthesis and artificial photosynthesis. He is best known for the discovery of the key role of bicarbonate on the electron acceptor side of Photosystem II. We also present his active involvement in the recognition of scientists at conferences and beyond, as well as of those who are no longer with us. He is committed to keeping alive the pioneers and discoverers in the field of photosynthesis in the collective memory of those in the field.
Teacher E-professionalism: An Examination of Western Canadian Pre-service Teachers’ Perceptions, Attitudes, and Facebook Behaviours
Creators: name: Poth, Cheryl
name: McCallum, Kendra
name: Tang, Wei
Publisher: name: Alberta Journal of Educational Research
Year: 2016

description: This study addresses the pressing need for attending to teacher e-professionalism, that is, the appropriate application of information and communication strategies when using digital media. The authors examine data patterns related to 113 pre-service teachers’ perceptions of e-professionalism, attitudes towards existing technology-related professional guidelines, and current behaviours on Facebook. The results from the online questionnaire suggest that these Western Canadian pre-service teachers are uncertain about what online behaviours should be restricted and whether maintaining e-professionalism was possible. Integrated findings are discussed in light of communication privacy management theory. The paper concludes by advancing implications for informing e-professional education for teachers. Cette étude adresse le besoin pressant pour assister e-professionnalisme d'enseignant, qui est, l'application appropriée de stratégies d'information et de communication lors de l'utilisation des médias numériques. Les auteurs examinent les configurations de données de 113 enseignants en formation liées à leurs perceptions d’e-professionnalisme, attitudes à l'égard des directrices professionnelles environ la technologie, et comportements actuels sur Facebook. Les résultats du questionnaire suggèrent que ces enseignants en formation de ouest canadiens sont incertains quant à ce que les comportements basés sur le Web devraient être limités et si maintenir e-professionnalisme était même possible. Les conclusions sont discutées utilisant une théorie de la gestion de la confidentialité des communications. L’article conclut en avançant des implications pour informer l'éducation d' e-professionnel pour les enseignants.
description: Alberta Journal of Educational Research, Vol. 62 No. 1 (2016): Spring
Host and abiotic constraints on the distribution of the pine fungal pathogen Sphaeropsis sapinea (= Diplodia sapinea)
Creators: name: Roy, Julien
name: Kyritsi, Ioanna
name: Reinwarth, Nadja
name: Bachelier, Julien B.
name: Rillig, Matthias C.
name: Lücking, Robert
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: biogeography
subject: forest pathogens
subject: global change
subject: host specificity
subject: invasive species
subject: plant disease
subject: stress priming
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Plant fungal pathogens are an increasing emerging threat as climate change progresses. Sphaeropsis sapinea (syn. Diplodia sapinea), the causal fungal agent of Diplodia tip blight, is a major pathogen of pines of forestry and ornamental relevance in Europe and worldwide. Here, we combined molecular-based field surveys in a common-garden setting and across an elevation gradient with historical records, cultivation-based growth experiments and microscopy to report on host and abiotic constraints on the distribution of S. sapinea. Using the arboretum at the Botanical Garden Berlin, Germany, to control for environmental variability, S. sapinea was detected on all seven host Pinus species we studied. However, P. sylvestris is the only species in which the fungus was detected in symptomless needles at the arboretum, and the most frequently recorded host for over a century, suggesting that it is the main, and perhaps, potential original host. In addition, sampling symptomatic needles in four out of the seven same species across a gradient from 200 to 2,100 m of elevation in the French Alps, S. sapinea was not detected at elevation higher than 800 m. Abiotic constraints were also supported by reduced growth of isolates of S. sapinea at low temperature under controlled conditions, but a 35°C prior stress exposure increased the subsequent growth of S. sapinea within its optimal temperature range (20-30°C). Altogether, our study thus not only suggests that S. sapinea is more likely to cause tip blight in P. sylvestris compared to the other species we studied, but also that in the current context of global climate change with predicted temperature increases, the fungus could infect a wider range of pine hosts and locations worldwide.
title: ÐÑÑÐ²Ð»ÐµÐ½Ð¸Ðµ Wormhole-Ð°ÑÐ°Ðº Ð² ÑÐ°Ð¼Ð¾Ð¾ÑÐ³Ð°Ð½Ð¸Ð·ÑÑÑÐ¸Ñ ÑÑ ÑÐµÑÑÑ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¼Ð°ÑÐ¸Ð½Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Detection of Wormhole attacks in self-organizing networks using machine learning
Creators: name: ÐÐ¾Ð¿Ð¾Ð²Ð°, Ð®Ð»Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÑÐ°Ð¼Ð¾Ð¾ÑÐ³Ð°Ð½Ð¸Ð·ÑÑÑÐ°ÑÑÑ ÑÐµÑÑ
Ð°ÑÐ°ÐºÐ° ÑÐµÑÐ²Ð¾ÑÐ¾ÑÐ¸Ð½Ñ
ÑÐ¸ÑÑÐµÐ¼Ð° Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð²ÑÐ¾ÑÐ¶ÐµÐ½Ð¸Ð¹
self-organizing network
wormhole attack
intrusion detection system

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ ÑÐ°Ð¼Ð¾Ð¾ÑÐ³Ð°Ð·ÑÑÑÐ¸ÑÑÑ ÑÐµÑÐµÐ¹. ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ ÑÐ¸ÑÑÐµÐ¼ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ Wormhole-Ð°ÑÐ°Ðº. 2. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° ÑÐ°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ð¸ Wormhole-Ð°ÑÐ°Ðº Ð² ÑÐ°Ð¼Ð¾Ð¾ÑÐ³Ð°Ð½Ð¸Ð·ÑÑÑÐ¸ÑÑÑ ÑÐµÑÑÑ. 3. ÐÐ½Ð°Ð»Ð¸Ð· Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð½ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÐ¹ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿ Ð´Ð»Ñ Ð²ÑÑÐ²Ð»ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÑ Ð°ÑÐ°Ðº Ð² ÑÐµÑÐµÐ²Ð¾Ð¼ ÑÑÐ°ÑÐ¸ÐºÐµ Ð±ÑÐ» Ð¾Ð±ÑÑÐµÐ½ Ð¸ Ð¿ÑÐ¾ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½. ÐÑÐ¾Ð¼Ðµ ÑÐ¾Ð³Ð¾, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð° Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ, Ð° ÑÐ°ÐºÐ¶Ðµ, ÑÑÐ¾ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½ Ð²ÑÐ²Ð¾Ð´ Ð¾ÑÐ½Ð¾ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸Ð¼Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ðº ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼Ð¾Ð¹ Ð·Ð°Ð´Ð°ÑÐµ.
description: This work is devoted to the study of the security of self-organizing networks. Tasks that were solved in the course of the study: 1. Study of the classification of Wormhole attack detection systems. 2. Development of an approach for recognizing Wormhole attacks in self-organizing networks. 3. Analysis of the obtained results of the conducted experimental studies. The developed prototype for detecting computer attacks in network traffic was trained and tested. In addition, the effectiveness of the constructed prototype was evaluated using various methods, and a conclusion was made regarding the applicability of the proposed approach to the problem under consideration.
Exploring the Factors that Influence Female Students’ Decision to (Not) Enrol in Elective Physical Education: A Private School Case Study
Creators: name: Kiley, Jill
name: Robinson, Daniel Bruce
Publisher: name: Alberta Journal of Educational Research
Year: 2016

description: This article presents the results from a qualitative case study that examined the influencers upon a somewhat unique group of female students who opted out of elective physical education (PE). More specifically, this study focused upon female students attending an affluent private school, investigating why—when they transitioned from middle school to senior high school and PE became optional—they opted out of the class. Employing a research design that relied principally upon in-depth interviews, seven themes emerged from the students’ stories: perspectives on policy and PE programming, co-ed problems; friends’ influence, parental support for opting out, A+ academic achievement, free time and electives, and adequate physical activity accumulation outside of school. By considering these themes, particularly as they align with an Ecological Systems Theory, or EST (Bronfenbrenner, 1977) social-ecological framework, it is possible to more fully comprehend contributing influencers to these students’ decisions. Moreover, with this comprehension, we offer suggestions for future practice and inquiry. Cet article présente les résultats d’une étude de cas qualitative qui a examiné les facteurs qui influencent un groupe quelque peu unique d’étudiantes qui avaient choisi de ne pas s’inscrire au cours d’éducation physique facultatif. Plus précisément, cette étude porte sur les raisons pour lesquelles les étudiantes d’une école privée pour familles aisées, lors de leur transition de l’école élémentaire vers l’école secondaire où le cours d’éducation physique est dorénavant facultatif, ont décidé de ne pas s’y inscrire. La recherche repose sur une conception qui s’appuie principalement sur les entrevues détaillées. Sept thèmes découlent des récits des étudiantes : des perspectives sur la politique et la programmation du cours d’éducation physique; des problèmes liées aux cours mixtes; l’influence des amis; l’appui parental devant le choix de ne pas s’inscrire; une rendement académique de A+; le temps libre et les cours facultatifs; et suffisamment d’activité physique à l’extérieur de l’école. L’étude de ces thèmes et notamment la mesure dans laquelle ils correspondent à la Théorie des systèmes écologiques (Brofenbrenner, 1977) aide à mieux comprendre les facteurs qui influencent les décisions de ces étudiantes. Nous appuyant sur ces conclusions, nous offrons des suggestions pour la pratique et la recherche à l’avenir.
description: Alberta Journal of Educational Research, Vol. 62 No. 1 (2016): Spring
An updated system for the targeted mutagenesis of the psbDI:psbC operon in Synechocystis sp. PCC 6803: mutations targeting Asp460 in CP43 of Photosystem II reduce oxygen-evolving activity and perturb electron transfer in the quinone-Fe-acceptor complex
Creators: name: Khaing, Ei Phyo
name: Zhong, Victor
name: Eaton-Rye, Julian J.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: The cyanobacterium Synechocystis sp. PCC 6803 is widely used as a model organism to study Photosystem II (PS II) of oxygenic photosynthesis. In response to inherent genetic instability in cyanobacteria we re-sequenced our strain of Synechocystis sp. PCC 6803, designated as Glucose Tolerant Otago 1 (GT-O1), to establish its genomic background [Morris JN, Crawford TS, Jeffs A, Stockwell PA, Eaton-Rye JJ, Summerfield TC. 2014. New Zealand Journal of Botany. 52:36–47]. Here we have constructed a mutagenesis system to enable us to study roles of the D2 and CP43 PS II reaction centre proteins in the GT-O1 strain. A ΔDIC/ΔDII deletion mutant was assembled in which the psbDI/psbC operon encoding D2 and CP43 was replaced by a chloramphenicol-resistance cassette and psbDII, encoding a second copy of D2, was replaced with a kanamycin-resistance cassette. A DIC+/DII– control strain was constructed by reintroducing the psbDI/psbC operon under selection provided by a spectinomycin-resistance cassette. In this system mutations can be introduced following in vitro mutagenesis of the psbDI/psbC operon. To test our system, we introduced mutations at the CP43 residue Asp460 which is hydrogen bonded to Arg-24 and Arg-28 of the PsbT low-molecular-weight subunit of PS II that is found at the monomer–monomer interface of the PS II dimeric complex in the thylakoid membrane. While the control strain showed a similar phenotype to wild type our CP43 mutants (D460A, D460E and D460N) exhibited a reduction of oxygen-evolving activity and alteration in electron transfer between the primary (QA) and secondary (QB) plastoquinone electron acceptors of PS II.
Direct electron transport as a possible mechanism of electrogenic activity across a range of benthic cyanobacteria in a photosynthetic microbial fuel cell
Creators: name: Güttler, Johanna
name: Sophie-Jean Kennedy
name: Luimstra, Veerle M.
name: Wood, Susanna A.
name: Williams, David E.
name: Packer, Michael A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Microbial electrogenic behaviour is well characterised in prokaryotes, including the exo-electrogenic soil bacteria (‘metal breathers’) and cyanobacteria, some of which can perform a light-induced donation of electrons to electrochemical devices. Two main methods of electron donation are proposed in these organisms; mobile electron shuttles (redox mediators), and direct electron transport where redox active moieties embedded in the bounding membrane of the organisms provide electrical connection. In this study a photosynthetic microbial fuel cell was used to investigate the mechanism of electron donation from six benthic cyanobacteria to an external electrode. There was no evidence of mobile electron shuttles donating electrons to the bio-electrochemical system using electrochemical analysis by linear sweep voltammetry in any of the species studied. This indicates the possibility that all the benthic species investigated may use direct electron transport as a mechanism of electron donation, which is better recognised in single-celled planktonic species.