Relevant bibliographies by topics / Sex variations

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Sex variations'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Sex variations"

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KYRIACOU, C. "Sex variations." Trends in Genetics 8, no. 8 (1992): 261–63. http://dx.doi.org/10.1016/0168-9525(92)90241-u.

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Joy, Eileen, Tove Lundberg, and Katrina Roen. "Experiencing “the Wrong Kind of Puberty”: Navigating Teenage Years with a Variation in Sex Characteristics." Youth 3, no. 1 (2023): 465–76. http://dx.doi.org/10.3390/youth3010032.

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There are many different variations in sex characteristics, some of which have implications for how the body goes through puberty. This paper draws from critical disability studies and childhood and youth studies to understand the teenage experiences and aspirations of young people with variations in sex characteristics, focusing particularly on navigating puberty. We undertook a reflexive thematic analysis with interview data from 12 young people in England, all assigned female at birth. Our analysis produced a central theme: aspiring to certainty through “fixing” the wrong kind of puberty. Participants experience puberty as a time where things exist on a continuum of rightness and wrongness in comparison with their peers and in relation to their specific variation. We suggest that the neoliberal aspiration to and illusion of bodily control and certainty provides the context within which the medical management of variations in sex characteristics makes sense. Going through medical intervention in relation to a variation in sex characteristics provides a very particular aspirational context for young people. The experience of puberty is intersectionally differentiated for young people with variations in sex characteristics.
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Brasili-Bualandi, Patricia, and Emanuela Gualdi-Russo. "Discontinuous traits of the skull: Variations on sex, age, laterality." Anthropologischer Anzeiger 47, no. 3 (1989): 239–50. http://dx.doi.org/10.1127/anthranz/47/1989/239.

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Savin-Williams, Ritch C., and Geoffrey L. Ream. "Sex variations in the disclosure to parents of same-sex attractions." Journal of Family Psychology 17, no. 3 (2003): 429–38. http://dx.doi.org/10.1037/0893-3200.17.3.429.

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Abo-Hashem, Ekbal, Kefaya Mohamed, and Mohamed Atwa. "TRANSFERRIN AND HAPTOGLOBIN, AGE AND SEX VARIATIONS." Mansoura Medical Journal 21, no. 1 (1992): 243–56. http://dx.doi.org/10.21608/mjmu.1992.140730.

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Cohen, Felissa L., and Jerry Dean Durham. "Sex Chromosome Variations in School-Age Children." Journal of School Health 55, no. 3 (1985): 99–102. http://dx.doi.org/10.1111/j.1746-1561.1985.tb04089.x.

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Kosmidis, M. "Sex differences in seasonal variations in P300." Biological Psychology 49, no. 3 (1998): 249–68. http://dx.doi.org/10.1016/s0301-0511(98)00043-x.

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Raza, Syed Ahsan, Ramzan tahir, Mirelle Schnitzer, and Jack Siemiatycki. "Worldwide Sex Ratio Variations in Cancer Incidence." Annals of Epidemiology 27, no. 8 (2017): 507–8. http://dx.doi.org/10.1016/j.annepidem.2017.07.113.

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Cheng, Nuo, Haoting Jv, and Xunwei Zhang. "Study on the Impact of Lamprey Sex Ratio Variations on Ecosystem Dynamics from a Food Web Perspective." Highlights in Science, Engineering and Technology 109 (July 24, 2024): 332–37. http://dx.doi.org/10.54097/02b33q07.

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This study explores the impact of variations in the sex ratio of lampreys on ecosystem dynamics within a food web context. Using the Volterra predation and prey model, the research analyzes the natural growth and decline rates of populations, predator-prey relationships, and competition. The paper examines how changes in the sex ratio of lampreys affect the populations of herbivores, omnivores, and carnivores, as well as the survival of indigenous people. The analysis utilizes biological data from juvenile sea lampreys and employs Matlab for data fitting, establishing a relationship between the sex ratio of lampreys and the availability of food in the ecosystem. The findings highlight the interconnectedness of species within the food web and the significant role of sex ratio variations in lampreys on the larger ecosystem.
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Hannan, Edward L., and Dinesh Kumar. "Geographic Variation in the Utilization and Choice of Procedures for Treating Coronary Artery Disease in New York State." Journal of Health Services Research & Policy 2, no. 3 (1997): 137–43. http://dx.doi.org/10.1177/135581969700200303.

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Objectives: To examine geographical variations in rates of coronary artery bypass grafting (CABG) and percutaneous transluminal coronary angioplasty (PTCA) in New York State, and to examine variations in the choice between these two procedures. Methods: A retrospective analysis of data from the New York registries for CABG and angioplasty was conducted. Rates were compared for 12 different regions of the state to assess geographic variations. To assess variations in the choice of procedure, frequencies of each procedure by region were compared with expected frequencies obtained by a logistic regression model that related procedure performance to various patient risk factors. Results: There was more than a three-fold variation in age/sex adjusted CABG rates and more than a two-fold variation in age/sex adjusted angioplasty rates among regions. The regional percentages of patients undergoing CABG rather than PTCA ranged from 49% to 70%, and most of the disparity was not related to patient risk factors. Instead, the disparity was largely a result of differences in racial composition and the hospitalization rate for myocardial infarctions. Conclusions: There is considerable regional variation in New York in the tendency to use aggressive cardiac procedures and in the choice of which procedure to use, and these differences are mostly unrelated to patient need.
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Dissertations / Theses on the topic "Sex variations"

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Rahm, Olivia. "Variations in Sex Differentiation : The Neurobiology of Gender Dysphoria." Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17657.

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The aim of this review paper was to investigate variations in sex differentiation, andalso, examine what neurobiological underpinnings there are to gender identity andgender dysphoria. In addition, the most extreme form of gender dysphoria,transsexuality, will be described from a neurobiological perspective but also discussedin terms of the classification from DSM-5. One theory considered on how genderidentity originates is the fact that the sexual differentiation of the brain and thedifferentiation of sexual organs develop during different time periods. Alterationswere displayed in a demonstration of male-to-female (MTF) and female-to-male(FTM) transsexuals that showed reversed results in cell number in a part of thehypothalamus, acronymized INAH-3 and reversal volume results in another region,acronymized BSTc. Likewise, differences in grey matter in the right putamendepended upon their natal gender. It can be concluded that there is biologicalevidence for sex differentiation and indications that lead science into consideringbiological components for gender dysphoria. This conclusion suggests for futureresearch questions focused more on the possible genetic factors of gender identity,also, consider larger sample sizes and more replications. There is still incompleteknowledge of what exactly constitutes an individual’s gender identity.
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Acar, Adrienne Ann. "Clinical relevance of sex and age relate variations in corpus callosum morphology." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/65830.

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Anatomical research of the morphology of the corpus callosum (CC) has provided a baseline for normal development of the CC. Although a large extent of variation amongst individuals has been reported, there are certain asymmetries that are consistently found in the size and shape of the CC on a midsagittal view of the brain. As the CC is the major commissural tract in the brain, it is acceptable to assume that structural variation in the CC may give clues towards the diagnosis of specific diseases. Studies relating alterations in the size and shape of the CC to the diagnosis of disorders have been done in individuals with schizophrenia, bipolar disorder (and depression. Thus, knowledge of CC anatomy in association with sex and age related changes can be helpful in providing a baseline for the diagnosis and progression of a specific disease. Morphological changes with regard to sex and age have been the topic of an extensive amount of research. However, there still remains considerable controversy as some studies report significant differences and others report none. The aim of this study was to provide a detailed description of the anatomy and variations of the corpus callosum morphology in a South African population. A primary data set was compiled using a cadaveric population, and these results were compared to a secondary data set, using a healthy living population. Lastly, the results from both data sets were then compared with a third data set, comprising of a mental disorder population, and results gained from previous studies in order to determine possible diagnoses of certain mental disorders based on CC morphology. In this study, there was no sexual dimorphism observed in the thickness of the genu, splenium and trunk in all three samples. In the cadaver sample there was no difference in the length of the CC. In the mental disorder sample there was no sexual dimorphism in the length of the CC and cerebrum. However, in the cadaver sample there was a significant difference in the length of the cerebrum between the sexes. In the healthy MRI scan there was a statistically significant difference observed in the length of the CC and the length of the cerebrum. It was found that there was no statistically significant difference in the thickness of the genu, trunk, and length of the CC and length of the cerebrum with age in all three samples measured. There was a statistically significant difference observed in the thickness of the splenium in the healthy MRI scan sample in individuals over the age of 60 years of age. This difference was not observed in the cadaver or mental disorder sample. There were no statistically significant differences in the various CC parameters measured in the various mental disorders measured. With the exception of two parameters, no differences in measurements were observed between the cadaver and healthy MRI sample. The two exceptions were the thickness of the trunk and the length of the cerebrum. Therefore, with the exception of the above mentioned cases, measurements between cadavers and living samples can be used interchangeably. Thus, the concerns about shrinkage in cadaver studies are negligible. However, when comparing the cadaver and healthy MRI scan sample with the mental disorder CT scan sample there was a statistically significant difference observed in every CC parameter measured. Thus, there is a rather noticeable difference in the anatomical structure of the CC in individuals suffering from mental disorders. Data on normal CC morphology is under represented in the South African population. Observations of variations from normal CC morphology can be used as an indicator for the possibility of a mental disorder.<br>Dissertation (MSc)--University of Pretoria, 2017.<br>Anatomy<br>MSc<br>Unrestricted
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Fournet, Damien. "Skin temperature variations in the cold." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13551.

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Skin temperature plays an important role in human thermoregulation together with core temperature. Skin temperature varies to a large extent across the body and this is especially pronounced in cold environments. The variations of skin temperature are also involved in the generation of regional thermal perceptions that can lead to behavioural adjustments. Whilst the temporal and inter-individual variations of skin temperature have been well studied using contact sensors, the knowledge of spatial variations has received less attention in the literature. Infrared thermography is a specific imaging technique particularly valuable for the exploration of the topography or pattern of skin temperature across the body. Most research using this technique has only been case studies or experiments focused in one specific body region. However, extensive regional skin temperature data over the whole-body can be proven useful for different types of applications including the sport clothing industry in combination with other body-mapping data. The primary aim of this thesis was to develop an original and standardised method using infrared thermography enabling whole-body skin temperature data to be compared for the assessment of spatial, temporal and inter-individual variations. A specific methodology for infrared data collection and data processing was successfully developed in order to combine data from a variety of participants varying in anthropometrical characteristics. The main outcomes were the production of several skin temperature body maps, either absolute maps to show the magnitude of the temporal or inter-individual effects, and normalised maps (relative to mean skin temperature) allowing for topographical comparisons between protocol stages, populations or interventions. The second aim of the thesis was to extend the understanding of the skin temperature patterns and how these could relate with thermal perceptions. The body-mapping method gave the opportunity to investigate a large amount of conditions, where various internal or external determinants of skin temperature were be involved. This was mainly done in cool to cold environments (5°C to 20°C) where skin temperature is not uniform but is associated with local and overall comfort. Studies were firstly performed in semi-nude conditions (Chapter 3, 4, 5) and then in clothed conditions (Chapter 6 and 7). The semi-nude studies were designed to explore the potential sexdifferences in regional skin temperature responses whilst running (Chapter 3) with a special interest in the role of skinfold thickness, this was further extended with a group of males at rest having a large variety of fat content and thickness (Chapter 4). The influence of exercise type and air temperature on skin temperature patterns was studied with a rowing exercise (Chapter 5). Studies were then performed in clothed conditions (Chapter 5, 6). The influence of real-life conditions on skin temperature patterns and associated perceptual responses was observed during a hiking scenario (Chapter 6). Following these descriptive studies, manipulation of skin temperature patterns was performed using clothing in order to determine the presence of any relevant effect on thermal comfort (Chapter 7). Our results demonstrated that the skin temperature pattern over the whole-body is relatively universal with several features being consistently found regardless of the conditions or the populations. The upper body is usually warmer than the lower body and the body creases (orbital, elbow regions etc.) are also warmer than surrounding regions. A Y-shape of colder temperatures has been highlighted over the anterior torso as well as a T- or Y-shape of warmer temperature over the posterior torso. There are yet some specificities that can be displayed due to active muscles during exercise such as the warmer skin overlying the trapezius and biceps muscles in rowing (Chapter 5), the influence of the backpack construction with up to 3°C warmer skin temperature in the lower back (Chapter 6) or the importance of additional clothing insulation minimizing the anterior Y-shape of colder skin temperatures (Chapter 7). Beyond the thermal patterns, absolute skin temperature differences have been observed between sexes with females displaying 2°C colder skin during semi-nude running (Chapter 3) and 1°C colder skin during clothed walking (Chapter 6)compared to males. The skin temperature difference can also be as large as 6°C colder skin for an obese male compared to a very lean male (40% vs 7% body fat). Despite these differences, there were almost no significant differences in overall and regional thermal sensations and comfort between sexes or between males with varying body fat. Our results focused on body fat revealed that overall fat content and sum of skinfolds was inversely associated with the mean skin temperature response during various protocols (Chapter 4, 6, 7). Local skinfold thickness explained the inter-individual variability of local skin temperature for resting (Chapter 4) and exercising males (Chapter 7) in most body regions. In terms of intra-individual variations, the distribution of skinfold thickness across the anterior torso explained the distribution of skin temperature in this segment solely in conditions with strong regional contrasts (Chapter 3, 4 and 7). When the whole-body skin temperature pattern is considered, our body-mapping approach failed to show relationships between skin temperature distribution across the body and regional skinfold thickness distribution neither at rest nor during exercise. The relative contribution of other internal determinants such as local heat production,local blood flow distribution and local anthropometry should be further investigated to fully elucidate the spatial skin temperature variations depending on the climate, clothing and the body thermal state. Lastly, there was a trend towards improved thermal comfort during rest and exercise in the cold through a manipulation of skin temperature patterns targeting the naturally cold body regions with high insulation, therefore obtaining a more homogeneous skin temperature distribution across the body (Chapter 7). The present work will benefit the sport goods industry. The descriptive results of skin temperature variations will be useful in order to validate multi-segmental model of human thermoregulation. Further work can include pattern predictions for exercise types and conditions not covered by the present thesis. The skin temperature maps will mainly feed the general body-mapping approach for clothing design taking into account several other body mapping data such as sweat mapping and the combination of cold, warm and wetness sensitivity mappings. Lastly, the present results have highlighted the interest for targeted solutions and also the need for more evolutive systems in the field of cold weather apparel.
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Cornish, Kim M. "Variations in spatial cognition in adults and children : influence of handedness, familial sinistrality and sex." Thesis, Royal Holloway, University of London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242847.

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Roberts, Jonathan E. "Sex Differences on a Mental Rotation Task: Variations in Hemispheric Activation Between Children and College Students." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/31573.

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The area of cognitive research that has produced the most consistent sex differences is the area of spatial ability. Particularly, males usually perform better on mental rotation tasks than do females. One argument for these differences is that experience with spatial activity drives these differences, such that traditionally more masculine activities require more practice of spatial abilities. Another argument is biological in nature, such that there is either 1) a critical period of development that leads to differential lateralization of the brain, or 2) differential activation of the brain by circulating hormones. Performance on mental rotation tasks has been associated with right parietal activation levels, both during task performance and prior to performance during baseline recordings. The present study examined the relations among sex, age, EEG hemispheric activation (at the 10.5-13.5Hz. frequency band), and 2-dimensional mental rotation task ability. Nineteen eight-year-olds (10 boys) and 20 college students (10 men), had EEG recorded at baseline and while performing a mental rotation task. Men performed better on the mental rotation task than women, while there were no differences between boys and girls. After covarying for baseline EEG high alpha power values, EEG results during the mental rotation task indicated an interaction, with men exhibiting more activation (lower EEG power values at 10.5-13.5Hz) than women in the parietal and posterior temporal regions, while boys' and girls' power values 10.5-13.5Hz did not differ in the parietal or posterior temporal regions. Furthermore, during the baseline condition, men generally exhibited more activation (lower EEG power values at 10.5-13.5Hz) throughout all regions of the scalp. Results support the hypothesis that hormones, or hormonal influence, may result in a biological change which affects both brain activation and performance on mental rotation tasks.<br>Master of Science
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Wyatt-Hughes, Brandi. "The Heat Is On: Variations among Male and Female Chefs." TopSCHOLAR®, 2009. http://digitalcommons.wku.edu/theses/67.

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Bertault, Guillaume. "Variations adaptatives de la sex-ratio : vers une généralisation des modèles de manipulation en réponse à des facteurs environnementaux." Montpellier 2, 2002. http://www.theses.fr/2002MON20167.

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Odhiambo, Joseph A., Hywel C. Williams, Tadd O. Clayton, et al. "Global variations in prevalence of eczema symptoms in children from ISAAC Phase Three." Mosby Inc, 2009. http://hdl.handle.net/10757/625751.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>Background: In 1999, The International Study of Asthma and Allergies in Childhood (ISAAC) Phase One reported the prevalence of eczema symptoms in 715,033 children from 154 centers in 56 countries by using standardized epidemiologic tools. Objective: To update the world map of eczema prevalence after 5 to 10 years (ISAAC Phase Three) and include additional data from over 100 new centers. Methods: Cross-sectional surveys using the ISAAC questionnaire on eczema symptoms were completed by adolescents 13 to 14 years old and by parents of children 6 to 7 years old. Current eczema was defined as an itchy flexural rash in the past 12 months and was considered severe eczema if associated with 1 or more nights per week of sleep disturbance. Results: For the age group 6 to 7 years, data on 385,853 participants from 143 centers in 60 countries showed that the prevalence of current eczema ranged from 0.9% in India to 22.5% in Ecuador, with new data showing high values in Asia and Latin America. For the age group 13 to 14 years, data on 663,256 participants from 230 centers in 96 countries showed prevalence values ranging from 0.2% in China to 24.6% in Columbia with the highest values in Africa and Latin America. Current eczema was lower for boys than girls (odds ratio, 0.94 and 0.72 at ages 6 to 7 years and 13 to 14 years, respectively). Conclusion:ISAAC Phase Three provides comprehensive global data on the prevalence of eczema symptoms that is essential for public health planning. New data reveal that eczema is a disease of developing as well as developed countries.<br>Revisión por pares
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Kourtopoulos, Angeliki. "Perceived Educational Control (PEC) associated with Age, Parental Educational Attainment (PEA), School Type and Sex : A cross-sectional study including predictions and variations." Thesis, Högskolan i Gävle, Avdelningen för socialt arbete och psykologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23666.

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The current study mapped trajectories of perceived educational control (PEC) through its association with age, parental educational attainment (PEA), school type (public or private) and sex. The study surveyed 280 Australian formal students, in a cross-sectional design, between the ages of 17 and 25. Results displayed increased age predicting higher levels of PEC. Having one educated parent predicted greater PEC across age than did having no educated parents. Interestingly, having two educated parents did not significantly elevate PEC. Awaited, was the insignificance of sex in the predictions of PEC, meanwhile school type, yet also an insignificant predictor has opened up for further discussion. No differences were found in PEC levels between school types or genders. Future research should include cultural background of the participant and school attended. Another useful perspective would be measured PEC in relation to likelihood of studying; for those finishing secondary school, or currently not studying.<br>Den aktuella studien mäter upplevd utbildningskontroll genom sin koppling till ålder, föräldrarnas utbildningsnivå, skolform (offentlig eller privat) och kön. I studien undersöktes 280 australienska studerande, i en tvärsnittsdesign, mellan åldrarna 17 och 25. Resultaten visar på att högre ålder förutsäger ökningar i upplevd utbildningskontroll. Att ha en utbildad förälder förutspår högre upplevd utbildningskontroll (över ålder) än att inte ha någon utbildad förälder. Dock visar det sig att ha två utbildade föräldrar inte signifikant höjer upplevd utbildningskontroll. Som väntat, förutsåg inte kön upplevd utbildningskontroll, likaså förutsåg inte skolform nivåer av upplevd utbildningskontroll, men denna prediktor har öppnat upp för vidare diskussion. Inga skillnader påträffades i upplevd utbildningskontroll nivåer mellan skoltyperna eller könen. Framtida forskning bör omfatta kulturell bakgrund av deltagaren samt skolan som respondenten gått i. Ett annat användbart perspektiv mäter upplevd utbildningskontroll i förhållande till sannolikheten att studera i framtiden; för dem som för närvarande inte studerar, eller avslutar gymnasiet.
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Howard, Christina Marie. "Seasonal and Sex Differences in the Effects of Melatonin on Brain Arginine Vasotocin in Green Treefrogs (Hyla cinerea): Relationship to Melatonin Receptor 1a." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1871.

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Critical life history events such as breeding, migration and hibernation must take place in the correct environmental context to minimize deleterious consequences on survival and reproductive fitness. Neuroendocrine mechanisms synchronizing internal physiological states with extrinsic environmental cues are vital to timing life history events appropriately. Secretion of the pineal hormone melatonin is sensitive to light and temperature cues, which provides a physiological indicator of time of day and time of year for organisms. Melatonin influences seasonal reproduction in a variety of vertebrates, likely by altering the synthesis and/or release of reproductive neuropeptides in the brain. The neuropeptides arginine vasotocin and its mammalian homologue, arginine vasopressin, are well-known modulators of reproductive and sociosexual behavior across vertebrate taxa, and are likely targets of melatonin in the context of seasonal reproduction. There is extensive evidence that vasotocin/vasopressin innervation in the brain is subject to seasonal variation, and that this variation is frequently sexually dimorphic. However, evidence that melatonin directly modulates this important neuropeptide system is lacking. Melatonin receptor 1a (MT1 in mammals) may be responsible for mediating melatonin's influence on brain vasotocin, as it is known to regulate seasonal reproduction in a variety of vertebrates. In the present study, I asked whether melatonin influences brain vasotocin in male green treefrogs (Hyla cinerea), and compared the distribution of melatonin receptor 1a in the brain of green treefrogs between sexes and seasons. Adult male and female green treefrogs were collected from field sites in Louisiana during the summer breeding season. Summer animals were acclimated to lab conditions for 3 weeks, then euthanized and their brains collected. Winter animals were maintained in the lab for four months under incrementally changing photo-, thermo-, and hygroperiod regimes that mimicked the transition to winter in their natural habitat, followed by euthanasia and brain collection. A subset of winter males (Experiment 1) were implanted with melatonin-filled or blank silastic capsules for a period of one month prior to euthanasia and brain collection. Brains of these males were processed for vasotocin immunohistochemistry. I quantified AVT-ir cell number in Experiment 1 males in the nucleus accumbens (NAcc), amygdala and caudal striatum (AMG), preoptic area (POA), suprachaismatic nucleus (SCN), and ventral hypothalamus (VH). Melatonin did not influence brain vasotocin-ir cell number in any brain region. Brains from untreated summer and winter males and females were collected and processed for MT1 immunohistochemistry. MT1-ir cells were quantified in the NAcc, striatum (STR), AMG, POA, SCN, and VH. In all regions quantified, reproductively active males had significantly more MT1-ir cells than nonreproductive males. Within the summer breeding season, males had significantly more MT1-ir cells in the NAcc than did reproductively active females. In all other regions there was no significant difference in MT1-ir cell number between reproductively active males and females. Collectively, these data suggest that melatonin modulates vasotocin via MT1. These findings assist in elucidating the neuroendocrine mechanisms by which vertebrates integrate seasonal cues with physiology to correctly time critical life history events.
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Books on the topic "Sex variations"

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Monro, Surya, Adeline Berry, Morgan Carpenter, Daniela Crocetti, and Sean Saifa Wall. Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637.

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Jones, Tiffany. Euphorias in Gender, Sex and Sexuality Variations. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23756-0.

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Nanda, Serena. Gender diversity: Crosscultural variations. Waveland Press, 2000.

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Daniel, Serceau, ed. Erotisme et cinéma: Thèmes et variations. Atlas, 1986.

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1920-, Sutherland Margaret B., Baudoux Claudine, and Université Laval. Laboratoire de recherche en administration et politique scolaires., eds. Femmes et éducation: Politiques nationales et variations internationes. Université Laval, 1994.

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B, Sutherland Margaret, Baudoux Claudine, and Université Laval. Laboratoire de recherche en administration et politique scolaires., eds. Femmes et éducation: Politiques nationales et variations internationales. Université Laval, Laboratoire de recherche en administration et politique scolaires, 1994.

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Claudine, Baudoux, Sutherland Margaret B, and Université Laval. Laboratoire de recherche en administration et politique scolaires., eds. Femmes et éducation: Politiques nationales et variations internationales. Université Laval, Faculté des sciences de l'éducation, Laboratoire de recherche en administration et politique scolaires, 1994.

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Vatsyayana. The pop-up Kama Sutra: 6 paper-engineered variations. Stewart, Tabori & Chang, 2003.

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Evrard, Franck. De la fellation dans la littérature: De quelques variations autour de la fellation dans la littérature française. Castor astral, 2001.

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Lax, Robert. To the sea: À l'amère : poème et variations. Livre à livre, 1990.

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Book chapters on the topic "Sex variations"

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Monro, Surya, and Daniela Crocetti. "Critical Approaches to Medicine and Healthcare." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-4.

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Monro, Surya. "Introduction to Variations of Sex Characteristics, Intersex, and DSD." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-1.

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Monro, Surya. "International Dynamics." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-6.

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Monro, Surya, and Adeline Berry. "Understanding People's Lived Experiences." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-2.

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Carpenter, Morgan, and Surya Monro. "Human Rights, Equalities and Citizenship." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-7.

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Crocetti, Daniela, and Surya Monro. "Activism, Advocacy, and Alliances." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-5.

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Monro, Surya, and Sean Saifa Wall. "Social Theories." In Intersex, Variations of Sex Characteristics, DSD. Routledge, 2024. http://dx.doi.org/10.4324/9781003219637-3.

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Jones, Tiffany. "LGBTQ+ Youth Euphorias! Stop-Start Shifts in LGBTQ+ Youth Happiness & Comfort." In Euphorias in Gender, Sex and Sexuality Variations. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23756-0_4.

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AbstractLesbian, gay, bisexual, transgender, and queer (LGBTQ+) students were a point of policy contention in recent elections and often portrayed as victims. This chapter investigates 1968 LGBTQ+ students experiences of euphoria. Of over a third who had euphoric experiences, most students experienced euphorias sometimes or often. Young, out, and non-binary youth especially experienced euphorias. Community Connection, Acceptance, Category Validation, and Institutional Inclusion euphorias dominated. Change-trends included: (1) increase and intensification of Acceptance euphorias with support; (2) shifts in Category Validation euphorias dependent on identity fit, exposure and bias; (3) more Acceptance euphorias upon dissipation of internalised biases, and (4) heightening and deadening of Acceptance euphoria around specific teachers. Changes to youth euphorias thus had a monumentality; Acceptance and Category validation euphorias were especially reactive.
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Jones, Tiffany. "Setting Euphoria Agendas? What We Know and Need to Know." In Euphorias in Gender, Sex and Sexuality Variations. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23756-0_8.

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AbstractThis final chapter uses the ecological model of psycho-social development introduced in Chap. 2 to frame what was learned about euphorias for different groups and contexts, and different age-stages and time periods, across the data presented from several different studies in the book. It considers and discusses these findings in relation to existing literature on euphoria, emotion, and lesbian, gay, bisexual, transgender intersex, and queer (LGBTIQ+) people. It clarifies the new information presented across the studies and its value in terms of various disciplines of knowledge. The chapter finally concludes by offering possible applications of this new knowledge in practice for stakeholders. It then also discusses what is not yet known about euphoria and sets new agendas for the uses and study of euphorias.
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Jones, Tiffany. "Euphorias! Positive Feelings Within Negative Conditions." In Euphorias in Gender, Sex and Sexuality Variations. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23756-0_1.

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AbstractPeople within marginal gender, sex, and sexuality groups are mostly framed within conservative psycho-medical research, or critical empowerment literature. In both literatures, their framing has negative aspects either negating their bodies, identities, health, or function, or positioning within discriminatory contexts. Resisting deficit-based framings, this book uses the concept ‘euphoria’ to investigate when, why, and how marginal gender, sex, and sexuality groups have positive experiences of their diverse variations. These positive experiences appear to occur within, and even in part due or at least in relation to, marginal groups’ repressive and disordering contexts and marginalisation itself. This chapter supplies an overview of the different literatures on euphoria. It relates this work to information on dysphoria. It then supplies an outline of the chapters of the book.
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Conference papers on the topic "Sex variations"

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Unser, Michael. "Learning of Nonlinearities for Stable Iterative Image Reconstruction." In Computational Optical Sensing and Imaging. Optica Publishing Group, 2024. https://doi.org/10.1364/cosi.2024.cth5a.1.

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We present a variational framework for learning nonlinearities within a recurrent neuronal architecture for image reconstruction. Our use of second-order total variation regularization induces solutions that are adaptive linear splines. Full-text article not available; see video presentation
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Cook, Michael, Sanford Dawsey, Susan Devesa, and Katherine McGlynn. "Abstract B12: Variations in cancer incidence rate sex ratios." In Abstracts: Frontiers in Cancer Prevention Research 2008. American Association for Cancer Research, 2008. http://dx.doi.org/10.1158/1940-6207.prev-08-b12.

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Bopp, Daniel. "Sex determination in the house fly: Variations on a common theme." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.92758.

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Raza, Syed-Ahsan. "Abstract 5754: Spatial clustering of sex ratio variations of cancer incidence: A modified Moran's index approach." In Proceedings: AACR Annual Meeting 2020; April 27-28, 2020 and June 22-24, 2020; Philadelphia, PA. American Association for Cancer Research, 2020. http://dx.doi.org/10.1158/1538-7445.am2020-5754.

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Alveal-Mellado, Daniel, and Lydia Giménez-Llort. "Sex-Dependent Variations in Voluntary Exercise of 14-Month-Old 3xTg-AD Mice Associated with Novelty Inhibition." In IECBS 2022. MDPI, 2022. http://dx.doi.org/10.3390/iecbs2022-12946.

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Gherasim, Elena. "Analiza particulartăților biometrice la specia Rana ridibunda Pallas, 1771 in condițiile Republicii Moldova." In International Symposium "Actual problems of zoology and parasitology: achievements and prospects". Institute of Zoology, 2017. http://dx.doi.org/10.53937/9789975665902.24.

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This article reflects the practical analysis of the morphological aspects and sex variations of body proportions have been studied in population of the marsh (Rana ridibunda, Pall., 1771) frogs in the Republic of Moldova. It has been evaluated 15 biometric parameters and 9 index parameters of 30 specimens of the marsh frog. It has been established, that not only degree, but also a character of sex difference changes with age according to body proportions.
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Kolesnikov, Vladimir A., Svetlana P. Shchelykalina, Dmitry V. Nikolaev, and Oiuna T. Mytypova. "Developing a Tool to Assess the Effect of Age and Sex Trends of Variations in Human Body Composition During a Long-Term Study." In 2024 26th International Conference on Digital Signal Processing and its Applications (DSPA). IEEE, 2024. http://dx.doi.org/10.1109/dspa60853.2024.10510083.

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Abd-Alhussein, Elaf, Eman Abdul Ameer, Aya Ali, Ali Al-Marzoqi, Ahmed Yas, and Ammar Shalan. "Unveiling the Genetic Symphony: Exploring IL- 6 and IL-10 Gene Variations as Pivotal Predictors of COVID-19 Severity in the Babylonian Population." In 5th International Conference on Biomedical and Health Sciences. Cihan University-Erbil, 2024. http://dx.doi.org/10.24086/biohs2024/paper.1460.

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The new coronavirus, which is now many respiratory illnesses in Wuhan, China, under the name SARS- CoV-2, from December 2019. The illness COVID-19 was brought on by this virus. A worldwide pandemic has been caused by the virus spreading from person to person. The investigation tries assess polymorphism effect with some genes like Interleukin-6 and Interleukin- 10 on susceptibility to covid-19 in Babylon province. A total of (113) cases in this study (63) cases have clinical symptoms of covid -19 patient, (50) blood samples were collected from healthy people as a control group in this study during (November 2021 to February 2022) at Al-Morgan Hospital. There were many demographic data included in the present study such as age distribution, sex distribution, and geographic distribution of covid patients. Among (63) samples from suspected covid -19 patients from different age groups (20 to 80 years old). The three genotypes (CC, CG &amp;GG), respectively (5.31, 38.94, 11.50), and the allele frequency of (C, G) were (44.44, 55.56) for patients and genotypes (CC, CG &amp;GG), respectively (15.04, 23.01, 6.19) and the allele frequency of (C, G) was (60.00, 40.00) for controls. three genotypes (GG, GA &amp;AA), (3.54, 51.33, 0.88) respectively, and allele frequency of (G, A) was (52.38, 47.62) respectively for the patients and genotypes (GG, GA &amp;AA), (7.96, 20.35, 15.93) respectively, and allele frequency (G, A) was (41.00, 59.00) respectively for control people.
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Tecza, Joseph, Peter Menegay, and Jay Koch. "Modeling and Evaluation of Centrifugal Compressor Performance Variations Using Probabilistic Analysis." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68464.

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This paper presents a methodology for analyzing the variation in compressor stage performance due to component dimensional variations for a range of flows, speeds, gas compositions and scale factors. Due to the large number of input parameters involved, a Design of Experiments (DOE) approach was used to develop key variables, and to develop response surface models of head coefficient and efficiency in terms of these key variables. These response surface-based performance models then are used for a probabilistic analysis of head coefficient and efficiency as functions of dimensional variations, for a range of compressor sizes. The variations in dimensions are expressed as probability distributions and evaluated using a Monte-Carlo integration technique. The techniques for developing the response surfaces and performing the probabilistic analysis are described, as are methods for evaluating both the effects of dimensional variation on performance and for evaluating how much dimensional variation can be tolerated before the variation exceeds established limits.
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Aragão, José Aderval, Flavio de Souza Barros Junior, Pedro Salgueiro Pereira de Castro, et al. "Frequency of agenesis of the dorsal wall of the sacrum and its clinical implications." In III SEVEN INTERNATIONAL MULTIDISCIPLINARY CONGRESS. Seven Congress, 2023. http://dx.doi.org/10.56238/seveniiimulti2023-086.

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Introduction: The sacrum, formed by the union of the five sacral vertebrae, is positioned at the base of the spine and between the two hip bones. These vertebrae begin to fuse between 16 and 18 years of age and end around 30 years of age. However, in some cases, this structure may suffer anatomical variations, such as agenesis of the dorsal wall of the sacrum, which is a failure in the union of the laminae of the sacral vertebrae. Objective: To analyze the frequency of complete agenesis of the dorsal wall of the sacrum and its clinical and surgical implications. Methodology: A descriptive morphologic and anthropometric study was performed with 45 sacrums of unknown sex and age. The length of the sacral canal was calculated using a digital caliper with 0.01 mm precision. Results: Complete agenesis of the posterior wall of the sacrum was observed in 2 of the 45 sacrums analyzed (4.44%). In the first case, the length of the sacral canal was 110 mm. A triangular shape was observed in the proximal two-thirds and a quadrangular shape in the distal third, with a narrowing between the third and fourth sacral vertebrae. In the second case, the length of the sacral canal was 96 mm, and a triangular shape was observed in the proximal and middle thirds, with a narrowing between S2-S3 and a quadrangular shape in the distal third, with a narrowing between S4-S5. Conclusion: The study of this anatomical variation was necessary, since its occurrence has been persistent and its knowledge can reduce the failures made by clinicians and surgeons in the application of caudal epidural anesthesia, in the diagnosis of low back pain or even in the treatment of congenital diseases, for example meningocele and myelomeningocele.
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Reports on the topic "Sex variations"

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Cullen, Mark, Michael Baiocchi, Karen Eggleston, Pooja Loftus, and Victor Fuchs. The Weaker Sex? Vulnerable Men, Resilient Women, and Variations in Sex Differences in Mortality since 1900. National Bureau of Economic Research, 2015. http://dx.doi.org/10.3386/w21114.

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Muñoz, Ercio, Melanie Saavedra, and Dario Sansone. The Lives of Intersex People: Socio-Economic and Health Disparities in Mexico. Inter-American Development Bank, 2024. http://dx.doi.org/10.18235/0013001.

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This paper reports socio-economic and health outcomes for intersex people in Mexico using data collected between 2021 and 2022. This is the first study relying on a large nationally representative survey including information on sex variations to document substantial negative outcomes for intersex individuals. Around 1.6% of individuals aged 15-64 are intersex. There are significant disparities in mental, physical, and sexual health when comparing intersex individuals to the general population, including higher rates of bullying, stigmatization, harassment, and violence throughout the life cycle, as well as higher rates of suicidal intention. Additionally, intersex individuals have lower education levels and face substantial barriers in the workplace and healthcare environments.
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Julian, Christopher. Geographic Variation in Percentage of Unions Including Same-Sex and Different-Sex Couples Unions. National Center for Family and Marriage Research, 2023. http://dx.doi.org/10.25035/ncfmr/fp-23-06.

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Payne, Krista, and Wendy Manning. Recent Marriages to Same-sex and Different-sex Couples: Mobility, Region, Home Ownership, and Household Income. National Center for Family and Marriage Research, 2021. http://dx.doi.org/10.25035/ncfmr/fp-21-20.

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Although approximately half of all marriages in the U.S. end in divorce (Amato, 2010; Cherlin, 2010), the remarriage rate has declined steadily in recent decades (Brown &amp; Lin, 2013; Schweizer, 2019). In this profile, we examine the trend in the remarriage rate since 1990 (see Note) and investigate geographic variation in the remarriage rate by gender using recent American Community Survey (ACS) data. This profile is an update of a previous profile on the Geographic Variation in the Remarriage Rate (FP-15-08).
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Bartoletti, A., and N. Tang. Characterizing Network Services through Cluster-Set Variations. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/15016408.

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Harari, Ally R., Russell A. Jurenka, Ada Rafaeli, and Victoria Soroker. Evolution of resistance to mating disruption in the pink bollworm moth evidence and possible mechanism. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7598165.bard.

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t The pink bollworm, Pectinophoragossypiellais a key pest of cotton world-wide. In Israel mating disruption sex pheromone is used in all cotton fields and recent repeated outbreaks of the pest populations has suggested a change in the population sex pheromone characteristics. The research goals were to (1) determine the change in pheromone characteristic of PBW females after long experience to Mating Disruption (MD), (2) to test the male’s antennae response (EAG) to pheromone characteristics of laboratory, naive females, and of field collected, MD experienced females, (3) to analyse the biosynthetic pathway for possible enzyme variations, (4) to determine the male behavioural response to the pheromone blend involved in the resistance to MD. The experiments revealed that (1) MD experienced females produced pheromone blend with higher ZZ ratio than lab reared (MD naive females) that typically produced ZZ:EE ratio of 1:1. (2) Male’s origin did not affect its response to pheromone characteristics of lab or field females. (3) A transcriptome study demonstrated many gene-encode enzymes in the biosynthetic pathway, but some of the transcripts were produced in differing levels in the MD resistant populations. (4) Male origin (field or lab) influenced males’ choice of mate with strong preference to females sharing the same origin. However, when MD was applied, males of both populations were more attracted to females originated form failed MD treated fields. We conclude that in MD failed fields a change in the population mean of the ratio of the pheromone components had occurred. Males in these fields had changed their search “image” accordingly while keeping the wide range of response to all pheromone characteristics. The change in the pheromone blend is due to different level of pheromone related enzyme production.
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Brunel, Thomas, and Ruben Verkempynck. Variations in North Sea sole distribution : variation in North Sea sole distribution with respect to the 56°N parallel perceived through scientific survey and commercial fisheries. Wageningen Marine Research, 2018. http://dx.doi.org/10.18174/465031.

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Ni, Jiachun, Qiong Jiang, Gang Mao, et al. The effectiveness and safety of acupuncture for constipation associated with Parkinson’s disease: Protocol for a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.2.0091.

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Review question / Objective: Is acupuncture a safe and effective therapy for constipation associated with Parkinson’s disease? Our aim is to assess the effectiveness and safety of acupuncture for constipation associated with PD and give guidance to future research direction. Condition being studied: Parkinson’s disease (PD) is a prevalent degenerative disease of nervous system characterized mainly by static tremor, bradykinesia, myotonia, postural gait disorders and other non-motor symptoms. According to variations on race, ethnicity, age and sex, the incidence of PD ranges from 8 to 20.5 per 100, 000 individuals annually. One global research shows that there were 6.1 million individuals suffer from PD in 2016 and will be 12 million patients around the world. According to several outcomes of case-control studies, the prevalence of constipation in PD varies from 28% to 61%. Constipation, as a common gastrointestinal disease which refers to the clinical presentation of reduced spontaneous complete bowel movement, dyschezia, feeling of incomplete defecation and outlet obstruction, is demonstrated to antedate the motor symptom and it's severity is related to the progression of PD. Acupuncture has been proved to act on the pathogenesis of constipation associated with PD. The proposed systematic review we're about to present is the first advanced evidence-based medical evidence in this area.
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Julian, Christopher, Krista Westrick-Payne, and Wendy Manning. Geographic Variation in the Prevalence of Same-sex and Different-sex Married and Cohabiting Couples, 2019-2023. National Center for Family and Marriage Research, 2025. https://doi.org/10.25035/ncfmr/fp-25-20.

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June 26, 2025 marks the tenth anniversary of the U.S. Supreme Court’s landmark Obergefell v. Hodges decision, which legalized same-sex marriage nationwide. Although the number of same-sex married couples has grown since the ruling, cohabitation remains more common among same-sex couples than their different-sex counterparts (Walker &amp; Taylor, 2021). This Family Profile updates FP-23-06 (Julian, 2023), drawing on American Community Survey, 5-year estimates 2023 from IPUMS USA (Ruggles et al., 2024) to estimate geographic variation in the share of same-sex cohabiting and married couples among all cohabiting and married couples. Married and cohabiting couples were identified using the revised household relationship roster (Kreider &amp; Gurrentz, 2019), which restricted the sample to unions that included the household reference person. The ACS 5-year PUMS file provides period estimates based on data collected over five consecutive years, allowing for more reliable analysis of small populations and geographies that cannot be adequately measured using annual data alone (Raglin, 2022). The 2023 5-year file is notable as it is the first 5-year dataset to fully reflect responses gathered since the implementation of the revised household roster. Find our other profiles on LGBTQ+ relationships here.
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Bando, Rosangela, Florencia López Bóo, and Xia Li. Sex-Differences in Language and Socio-emotional Skills in Early Childhood. Inter-American Development Bank, 2016. http://dx.doi.org/10.18235/0011759.

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This study explores sex differences in language and socio-emotional skills. It focuses on children 7 months old to 6 years old in Chile in 2012 and Nicaragua in 2013. A focus on young children allowed for ruling out a set of environmental and identity effects to explain the gap. Females had an advantage in both countries and both dimensions. Males in Chile scored at -0.13 standard deviations (SD) in language in the distribution of females. In addition, males scored at -0.20 SD in socio-emotional skills. The gaps in Nicaragua were not statistically different to those in Chile. Thus geographical and cultural variation across the two countries did not affect the gap. Within countries, variation in family characteristics, parenting practices and health investments did not explain the gap either. These findings shed light on the role of biological and environmental factors to explain sex gaps. The identification of the role of these factors is necessary to inform policy.
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