cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.7910/dvn/he1eso/0tasly
title: Section F-I Credit and payment terms,Service Delivery, Transport and Backgroung information .tab

description: :unav
DOI: 10.7910/dvn/he1eso/8vigyq
title: IRB_Consent_Form_butter trader_Oromiffa.pdf

description: :unav
DOI: 10.7910/dvn/he1eso/dtkxky
title: Butter_trader_questionnaire.pdf

description: :unav
DOI: 10.7910/dvn/he1eso/qgv3ga
title: Codebook_Section C Market prices of butter and cheese.tab

description: :unav
DOI: 10.7910/dvn/he1eso/rendm2
title: Section E Q2 & 3 Value of Assets owned by the business.tab

description: :unav
DOI: 10.7910/dvn/he1eso/w9v5sy
title: Codebook_Section E Q2 & 3 Value of Assets owned by the business.tab

description: :unav
DOI: 10.7910/dvn/nhypns/bijjs3
title: Section E Q2 & 3 Value of Assets owned by the business.tab

description: :unav
DOI: 10.7910/dvn/nhypns/mi2ba5
title: Section C Market prices of Milk.tab

description: :unav
DOI: 10.7910/dvn/nhypns/ydrwsf
title: Codebook_Section C Market prices of Milk.tab

description: :unav
DOI: 10.7910/dvn/nhypns/3pchwj
title: Codebook_Section D Q7-12 Procurement and sales pattern.tab

description: :unav
DOI: 10.7910/dvn/nhypns/8l5jq4
title: Section F-I Credit and payment terms,Service Delivery, Transport and Backgroung information.tab

description: :unav
DOI: 10.7910/dvn/nhypns/8lsvdl
title: IRB_Consent_Form_Milk Trader_Oromiffa.pdf

description: :unav
DOI: 10.7910/dvn/nhypns/efz9st
title: Codebook_Section F-I Credit and payment terms,Service Delivery, Transport and Backgroung information.tab

description: :unav
DOI: 10.7910/dvn/nhypns/fm63wy
title: Section E Q1 Labor use in the business.tab

description: :unav
DOI: 10.7910/dvn/nhypns/fwirdu
title: Milk_trader_questionnaire.pdf

description: :unav
DOI: 10.7910/dvn/nhypns/ikxo2f
title: Codebook_Section D Q1-5 Procurement and sales pattern.tab

description: :unav
DOI: 10.7910/dvn/nhypns/nthogo
title: Codebook_Section E Q2 & 3 Value of Assets owned by the business.tab

description: :unav
DOI: 10.7910/dvn/nhypns/vzpdt2
title: Section D Q1-5 Procurement and sales pattern.tab

description: :unav
DOI: 10.18430/m3.irrmc.5415
title: X-ray diffraction data for the example data set from ALS beamline 12.3.1. Related to the 4tws protein.
DOI: 10.18430/m3.irrmc.5416
title: X-ray diffraction data for the example data set from ALS beamline 8.3.1. Related to the 1rb5 protein.
DOI: 10.7910/dvn/nhypns/6gog3r
title: Codebook_Section A and B Information on characteristics of Milk trader_Agent and importance Milk.tab

description: :unav
DOI: 10.7910/dvn/nhypns/fwml6o
title: Section A and B Information on characteristics of Milk trader_Agent and importance Milk .tab

description: :unav
DOI: 10.7910/dvn/nhypns/lthmx5
title: Codebook_Section E Q1 Labor use in the business.tab

description: :unav
DOI: 10.7910/dvn/nhypns/vpf3g4
title: Section D Q7-12 Procurement and sales pattern.tab

description: :unav
DOI: 10.17632/5453nzyzcy.3
title: Data for: Comparisons of sea ice motion and deformation, and their responses to ice conditions and cyclonic activity in the western Arctic Ocean between two summers

description: The data are the position data measured by the buoys deployed in summer 2014 and 2016
DOI: 10.7910/dvn/mgacra/cvweng
title: codebook_Section VI Dynamics in Production and Marketing of Dairy.tab

description: :unav
DOI: 10.7910/dvn/mgacra/fs8toq
title: codebook_Section VIIBC Current Transport Cost and Time.tab

description: :unav
DOI: 10.7910/dvn/mgacra/fyva45
title: codebook_Section III Milk Collection in the Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/hmfksv
title: codebook_Section I List of The Nearest Services or facilities.tab

description: :unav
DOI: 10.7910/dvn/mgacra/jjm2al
title: codebook_Section 0 Background of participants.tab

description: :unav
DOI: 10.7910/dvn/mgacra/ljrqw8
title: codebook_Section IV Cooperatives and Section V Perceptions.tab

description: :unav
DOI: 10.7910/dvn/mgacra/t6rvuv
title: codebook_Section VIIA Prices of Dairy Products in This Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/z8re3u
title: codebook_Section II List of Dairy Sales Markets (excluding milk) Used by Households in This Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/97ne7n
title: codebook_Section IX Approximate Prices of Cattle Over the Last 12 Months.tab

description: :unav
DOI: 10.7910/dvn/mgacra/ci7ooj
title: codebook_Section XVI Farmers and Land in the Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/llbowh
title: codebook_Section XV Average Current Prices of Products During Last Week For Crops That are Produced in This Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/lz4qmp
title: codebook_Section XIV Challenges in Dairy.tab

description: :unav
DOI: 10.7910/dvn/mgacra/muuxzs
title: codebook_Section XIII Land Prices.tab

description: :unav
DOI: 10.7910/dvn/mgacra/nwmok5
title: codebook_Section VIII Approximate Average Daily Wage Levels Over the Last 12 Months.tab

description: :unav
DOI: 10.7910/dvn/mgacra/tyz4ue
title: codebook_Section XI Details on the Seasonality of the Use of Grazing and Feeds for an Average Dairy HH for its Dairy Cows.tab

description: :unav
DOI: 10.7910/dvn/mgacra/uigcjd
title: codebook_Section XII Approximate Prices of Animal Vaccines in This Kebele in the last 12 months.tab

description: :unav
DOI: 10.7910/dvn/mgacra/vaunum
title: codebook_Section X Approximate Current Cost of Dairy Inputs In this Kebele (Last Week).tab

description: :unav
DOI: 10.7910/dvn/oioxny/g45xxx
title: List -4A.tab

description: Arabic
DOI: 10.7910/dvn/mgacra/2iq0jj
title: codebook_Section XVII Extension Services in This Kebele.tab
DOI: 10.7910/dvn/mgacra/6t0pf7
title: IRB_Consent_Form_dairy community survey__Oromiffa.pdf

description: :unav
DOI: 10.7910/dvn/mgacra/h8v5qb
title: Section I List of The Nearest Services or facilities.tab

description: :unav
DOI: 10.7910/dvn/mgacra/n2jozt
title: Section IV Cooperatives and Section V Perceptions.tab

description: :unav
DOI: 10.7910/dvn/mgacra/npydmo
title: Section III Milk Collection in the Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/odlsxa
title: kebele Extrapolation factor.tab

description: :unav
DOI: 10.7910/dvn/mgacra/sbhihs
title: community questionnaire.pdf

description: :unav
DOI: 10.7910/dvn/mgacra/w3fvql
title: Section 0 Background of participants.tab

description: :unav
DOI: 10.7910/dvn/mgacra/zxcmzg
title: Section II List of Dairy Sales Markets (excluding milk) Used by Households in This Kebele.tab

description: :unav
DOI: 10.7910/dvn/edwhkb/fgo08g
title: UViko_WSD_MA_sample.txt

description: :unav
DOI: 10.7910/dvn/edwhkb/pg6ncn
title: UViko_original_sample.txt

description: :unav
DOI: 10.7910/dvn/mgacra/2zjidn
title: Section XIV Challenges in Dairy.tab

description: :unav
DOI: 10.7910/dvn/mgacra/9nelik
title: Section XI Details on the Seasonality of the Use of Grazing and Feeds for an Average Dairy HH for its Dairy Cows.tab

description: :unav
DOI: 10.7910/dvn/mgacra/ho9gga
title: Section XII Approximate Prices of Animal Vaccines in This Kebele in the last 12 months.tab

description: :unav
DOI: 10.7910/dvn/mgacra/icwv2e
title: Section VI Dynamics in Production and Marketing of Dairy.tab

description: :unav
DOI: 10.7910/dvn/mgacra/ohs6hn
title: Section VIIA Prices of Dairy Products in This Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/rm7lo7
title: Section VIIBC Current Transport Cost and Time.tab

description: :unav
DOI: 10.7910/dvn/mgacra/tsr2m0
title: Section X Approximate Current Cost of Dairy Inputs In this Kebele (Last Week).tab

description: :unav
DOI: 10.7910/dvn/mgacra/x6egzp
title: Section VIII Approximate Average Daily Wage Levels Over the Last 12 Months.tab

description: :unav
DOI: 10.7910/dvn/mgacra/ysqwhi
title: Section IX Approximate Prices of Cattle Over the Last 12 Months.tab

description: :unav
DOI: 10.5281/zenodo.3537938
title: Post-revision data and R Script for Murtagh et al. 'The scent of enrichment: Exploring the effect of odour and biological salience on behaviour during enrichment of kennelled dogs.'

description: Data and analysis file (written in R studio) for the paper Murtagh et al. 'The scent of enrichment: Exploring the effect of odour and biological salience on behaviour during enrichment of kennelled dogs.' Updated based on reviewer comments and additional analyses requested (master data and analysis filed labelled with 'rev' suffix).
DOI: 10.7910/dvn/mgacra/6p4wac
title: Section XVI Farmers and Land in the Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/mqz7ji
title: Section XV Average Current Prices of Products During Last Week For Crops That are Produced in This Kebele.tab

description: :unav
DOI: 10.7910/dvn/mgacra/qg6kgw
title: Section XIII Land Prices.tab

description: :unav
DOI: 10.7910/dvn/mgacra/qxdhjn
title: Section XVII Extension Services in This Kebele.tab
DOI: 10.7910/dvn/7aikzh/gls4wh
title: Section M Land Ownership and Cultivation.tab

description: Land Ownership and Cultivation
DOI: 10.7910/dvn/7aikzh/lenno7
title: SECTION H6 LABOR USE Q10.tab

description: LABOR USE Q10
DOI: 10.7910/dvn/7aikzh/picgdg
title: Section A Household Roster.tab

description: Household Roster
DOI: 10.7910/dvn/7aikzh/ykz42s
title: Section B Ownership and Management of Cattle.tab

description: Ownership and Management of Cattle
DOI: 10.7910/dvn/kvrvlb/6iqgyu
title: ESS 6 7 8 with Arntz.dta

description: Data file
DOI: 10.7910/dvn/kvrvlb/vgj4vt
title: Dofile (Finalized).do

description: Do-file
DOI: 10.7910/dvn/7aikzh/1cubwr
title: Section F1 Milk Sales.tab

description: Milk Sales
DOI: 10.7910/dvn/7aikzh/1dyjkz
title: Section P2 Agricultural and Household Assets.tab

description: Agricultural and Household Assets
DOI: 10.7910/dvn/7aikzh/3laf88
title: Section J Access to Agricultural Services and Knowledge Technology.tab

description: Access to Agricultural Services and Knowledge Technology
DOI: 10.7910/dvn/7aikzh/b4yzha
title: Section F4 FASTING VERSUS NON-FASTING.tab

description: FASTING VERSUS NON-FASTING
DOI: 10.7910/dvn/7aikzh/fuljaj
title: Section E Dairy Production.tab

description: Dairy Production
DOI: 10.7910/dvn/7aikzh/hjuwiq
title: Section D2 Dairy Output Use over the Last Month by Type of Dairy Products.tab

description: Dairy Output Use over the Last Month by Type of Dairy Products
DOI: 10.7910/dvn/7aikzh/qgg8zp
title: Section R Housing Quality and Household Assets.tab

description: Housing Quality and Household Assets
DOI: 10.7910/dvn/7aikzh/twvhzq
title: SECTION H6 LABOR USE Q6.tab

description: H6 LABOR USE Q6
DOI: 10.7910/dvn/7aikzh/wy0oa6
title: Section D1 Dairy Output Use over the Last 12 Months.tab

description: Dairy Output Use over the Last 12 Months
DOI: 10.7910/dvn/7aikzh/azj9p1
title: Section H1.1 FEEDING AND WATERING OF COWS.tab

description: FEEDING AND WATERING OF COWS
DOI: 10.7910/dvn/7aikzh/c2lgzb
title: Section L2 Food Consumption by Spouse.tab

description: FOOD CONSUMPTION BY SPOUSE
DOI: 10.7910/dvn/7aikzh/fmkrqo
title: Section L1 Food Consumption by Head of Household.tab

description: FOOD CONSUMPTION BY HEAD OF HOUSEHOLD
DOI: 10.7910/dvn/7aikzh/omp9d1
title: Section F3 SALES PROCESSED DAIRY PRODUCTS AND PRICES Q14.tab

description: SALES PROCESSED DAIRY PRODUCTS AND PRICES Q14
DOI: 10.7910/dvn/7aikzh/spd4bc
title: household(farmer) (producer)_questionnaire.pdf

description: :unav
DOI: 10.7910/dvn/7aikzh/wskqcu
title: Section O Non-Crop and Non-Dairy Income.tab

description: Non-Crop and Non-Dairy Income
DOI: 10.7910/dvn/7aikzh/zgvzss
title: Section I Changes in Dairy Production.tab

description: Changes in Dairy Production
DOI: 10.7910/dvn/vx6qvb/1eezan
title: runs.rds

description: :unav
DOI: 10.7910/dvn/vx6qvb/tf6r3l
title: analysis.r

description: :unav
DOI: 10.7910/dvn/7aikzh/17nfuu
title: SECTION H1.3 FEEDING AND WATERING OF COWS Q27.tab

description: FEEDING AND WATERING OF COWS Q27
DOI: 10.7910/dvn/7aikzh/gfbhyp
title: Sampling strategy_farmer survey.pdf

description: :unav
DOI: 10.7910/dvn/7aikzh/hb3sr4
title: Section N Crop Production (for all plots cultivated by the hh himself).tab

description: Crop Production for all plots cultivated by the household itself
DOI: 10.7910/dvn/7aikzh/hc54ss
title: Section L5 Food Security.tab

description: FOOD SECURITY
DOI: 10.7910/dvn/7aikzh/ljspx4
title: Section T Credit.tab

description: Credit
DOI: 10.7910/dvn/7aikzh/nmtslt
title: SECTION H1.2 FEEDING AND WATERING OF COWS Q24.tab

description: FEEDING AND WATERING OF COWS Q24
DOI: 10.7910/dvn/7aikzh/oppdks
title: SECTION H2-H5 BREEDING AND AI-ANIMAL HEALTH-MANURE HANDLING-RECORD KEEPING.tab

description: BREEDING AND AI-ANIMAL HEALTH-MANURE HANDLING-RECORD KEEPING
DOI: 10.7910/dvn/7aikzh/u85y4q
title: Section K Perceptions.tab

description: Perceptions on dairy cow feed and child nutrition
DOI: 10.7910/dvn/7aikzh/uvqscx
title: Section L4 Dairy Consumption in the Last 7 Days.tab

description: Dairy Consumption in the Last 7 Days
DOI: 10.7910/dvn/7aikzh/ykv91c
title: Section C Changes in Stock of Cattle in the Last 12 Months.tab

description: Changes in Stock of Cattle in the Last 12 Months
DOI: 10.7910/dvn/7aikzh/0xu0vv
title: SECTION H6 LABOR USE Q17.tab

description: SECTION H6 LABOR USE Q17
DOI: 10.7910/dvn/7aikzh/6logjo
title: SECTION H6 LABOR USE.tab

description: SECTION H6 LABOR USE
DOI: 10.7910/dvn/7aikzh/bjlzfy
title: Section L3 Food Consumption by the Youngest Child Q6-Q7.tab

description: Food Consumption by the Youngest Child Q6-Q7
DOI: 10.7910/dvn/7aikzh/c6fcw4
title: Section P1 Livestock Assets.tab

description: Livestock Assets
DOI: 10.7910/dvn/7aikzh/jhein7
title: Section F3 SALES PROCESSED DAIRY PRODUCTS AND PRICES Q0-Q13.tab

description: SALES PROCESSED DAIRY PRODUCTS AND PRICES Q0-Q13
DOI: 10.7910/dvn/7aikzh/jpfrab
title: Section F2 Non-Successful Milk Sales.tab

description: Non-Successful Milk Sales
DOI: 10.7910/dvn/7aikzh/od5xae
title: SECTION H6 LABOR USE Q15.tab

description: SECTION H6 LABOR USE Q15
DOI: 10.7910/dvn/7aikzh/oudwcp
title: Section G FOOD SAFETY MEASURES.tab

description: FOOD SAFETY MEASURES
DOI: 10.7910/dvn/7aikzh/rn3ckw
title: Section Q Livestock Ownership Other than Cattle.tab

description: Livestock Ownership Other than Cattle
DOI: 10.7910/dvn/7aikzh/a7b5lu
title: Extrapolation factor.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/dzftkn
title: codebook_Section F1 Milk Sales.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/go4pc7
title: Section L3 Food Consumption by the Youngest Child Q1-Q5.tab

description: Food Consumption by the Youngest Child Q1-Q5
DOI: 10.7910/dvn/7aikzh/n4gmkn
title: codebook_Section D2 Dairy Output Use over the Last Month by Type of Dairy Products.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/nwtbg2
title: Section S Farmer Characterstics.tab

description: Farmer Characteristics
DOI: 10.7910/dvn/7aikzh/pdlsmz
title: codebook_Section C Changes in Stock of Cattle in the Last 12 Months.tab
DOI: 10.7910/dvn/7aikzh/u4aodz
title: codebook_Section E Dairy Production.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/uskczn
title: codebook_Section A Household Roster.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/znnzkh
title: codebook_Section B Ownership and Management of Cattle.tab

description: :unav
DOI: 10.14457/cu.the.2007.2196
title: Impact of land management of soil bacterial diversity at Thonghaphum District, Kanchanaburi Province

description: Variations in soil properties and bacterial diversity in soil samples were noted for different land management, namely a chemically-intensive farm, an organic farm, and a forest at Thongphaphum District, Kanchanaburi Province. Significant differences in soil physical factors (soil moisture and pH) and nutrients (organic matter, organic carbon, total nitrogen, and available phosphorus contents) were found in sampling sites. Soil texture among three sites was classified as sandy loam. Forest had significantly higher organic matter and nutrient content than other sites. The analysis of soil bacterial community structure showed that the bacterial communities obtained from soils in 3 different sites were dominated by the r-strategist bacteria. No significant difference was found in bacterial numbers in both between sites and seasons, however, the colony forming unit (CFU) values were positively correlated with soil pH and soil nutrients. Ecophysiological index (EPI) values were not significantly different between sites and seasons. Despite no change in numbers of bacteria and EPI, there may be changes in bacterial function relating to land management. Finally, impacts of land management on bacterial diversity were analyzed. Total soil DNA were isolated from soil collected from 3 sites. The 16S rDNA was amplified with universal bacterial primers and cloned into plasmid vectors. Seventy clones were obtained. Phylogenetic analysis based on partial sequences (~379 bp) established with the neighbor-joining method and bootstrapped at 1,000 replications revealed the presence of major and minor groups that fell into several of the established lines of bacteria. Most of the clones belonged to the unidentified uncultured bacteria (57.14%) Moreover, Alpha (8.57%), Beta (2.86%), and Gamma (7.14%) Proteobacteria, Firmicutes (12.86%), Actinobacteria (8.57%), Bacteriodes (1.43%), and Planctomycetes (1.43%) were also found in this study. The majority of the clones (62.86%) had sequences that were 1-15% different from those current databases and 14.29% of the clones differed by more than 15% in sequence from the database. The results suggest that these Thongphaphum-derived clones are very diverse in phylogeny, and that many probably reflect new genera or families. From the results of bacterial diversity, different land management could affect the bacterial diversity because there were large numbers of unique phylotypes in each site. Although there was no significant difference between bacterial community structures among sites, it does not mean the land management practices have no impact to bacterial diversity. Furthermore, impacts of land management are also related to other factors, such as chemicals remaining in the area; and long-term studies should be implemented to examine absolute changes caused by land management.
DOI: 10.3886/e115466
title: Optimal Taxation under Regional Inequality

description: Combining an intensive labor supply margin with an extensive, productivity-enhancing migration margin, we determine how regional inequality and labor mobility shape optimal redistribution. We propose the use of delayed optimal-control techniques to obtain optimal tax formulae with location-dependent productivity and multi-dimensional<br>heterogeneity. Productivity-enhancing inter-regional migration exerts a downward pressure on marginal tax rates. Allowing for regionally differentiated taxation with location-dependent productivity, we find that marginal tax rates in high- (low-)productivity regions should be corrected downwards (upwards). Simulations using the productivity differences between metropolitan and other regions in the US indicate that productivity-increasing internal migration constitutes only a minor<br>constraint on regionally undifferentiated redistributive taxation, but it is quantitatively more important for differentiated taxation.<br><br>
DOI: 10.3886/e115466v1
title: Optimal Taxation under Regional Inequality

description: Combining an intensive labor supply margin with an extensive, productivity-enhancing migration margin, we determine how regional inequality and labor mobility shape optimal redistribution. We propose the use of delayed optimal-control techniques to obtain optimal tax formulae with location-dependent productivity and multi-dimensional<br>heterogeneity. Productivity-enhancing inter-regional migration exerts a downward pressure on marginal tax rates. Allowing for regionally differentiated taxation with location-dependent productivity, we find that marginal tax rates in high- (low-)productivity regions should be corrected downwards (upwards). Simulations using the productivity differences between metropolitan and other regions in the US indicate that productivity-increasing internal migration constitutes only a minor<br>constraint on regionally undifferentiated redistributive taxation, but it is quantitatively more important for differentiated taxation.<br><br>
DOI: 10.7910/dvn/7aikzh/2zdlcd
title: codebook_Section F2 Non-Successful Milk Sales.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/4v5spc
title: codebook_Section F3 SALES PROCESSED DAIRY PRODUCTS AND PRICES Q0-Q13.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/9vvu7n
title: codebook_SECTION H1.3 FEEDING AND WATERING OF COWS Q27.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/bzpmsh
title: codebook_SECTION H2-H5 BREEDING AND AI-ANIMAL HEALTH-MANURE HANDLING-RECORD KEEPING.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/cln8a2
title: codebook_Section F4 FASTING VERSUS NON-FASTING.tab
DOI: 10.7910/dvn/7aikzh/dgc6s5
title: codebook_SECTION H1.2 FEEDING AND WATERING OF COWS Q24.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/enafqr
title: codebook_Section G FOOD SAFETY MEASURES.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/jtjupe
title: codebook_Section H1.1 FEEDING AND WATERING OF COWS.tab

description: :unav
DOI: 10.7910/dvn/7aikzh/wty1ll
title: codebook_Section F3 SALES PROCESSED DAIRY PRODUCTS AND PRICES Q14.tab

description: :unav
DOI: 10.5281/zenodo.3518989
title: On the Performance of Method-Level Bug Prediction: A Negative Result

description: Bug prediction is aimed at identifying software artifacts that are more likely to be defective in the future. Most approaches defined so far target the prediction of bugs at class/file level. Nevertheless, past research has provided evidence that this granularity is too coarse-grained for its use in practice. As a consequence, researchers have started proposing defect prediction models targeting a finer granularity (particularly method-level granularity), providing promising evidence that it is possible to operate at this level. Particularly, models mixing product and process metrics provided the best results. We present a study in which we first replicate previous research on method-level bug-prediction, by using different systems and timespans. Afterward, based on the limitations of existing research, we (1) re-evaluate method-level bug prediction models more realistically and (2) analyze whether alternative features based on textual aspects, code smells, and developer-related factors can be exploited to improve method-level bug prediction abilities. Key results of our study include that (1) the performance of the previously proposed models, tested using the same strategy but on different systems/timespans, is confirmed; but, (2) when evaluated with a more practical strategy, all the models show a dramatic drop in performance, with results close to that of a random classifier. Finally, we find that (3) the contribution of alternative features within such models is limited and unable to improve the prediction capabilities significantly. As a consequence, our replication and negative results indicate that method-level bug prediction is still an open challenge.